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CDAC CCAT Study Materials
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Section A [ Quantitative ] - Profit and Loss 6
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Profit and Loss Part #1 09 minLecture2.1
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Profit and Loss Part #2 21 minLecture2.2
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Profit and Loss Part #3 15 minLecture2.3
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Profit & Loss [Formula]Lecture2.4
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Profit and Loss [ Notes ]Lecture2.5
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Profit and Loss [Practice Problems]Lecture2.6
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Section A [ Quantitative ] - Average 5
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Average full Concept and Tricks Part #1 11 minLecture3.1
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Average full Concept and Tricks Part #2 09 minLecture3.2
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Average full Concept and Tricks Part #3Lecture3.3
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Averages [ Notes ]Lecture3.4
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Averages Practice Questions 26 minLecture3.5
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Section A [ Quantitative ] - Arithmetic Progression and Geometric Progression 6
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Arithmetic Progression Part #1 10 minLecture4.1
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Arithmetic Progression Part #2 08 minLecture4.2
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Geometric Progression Part #1 08 minLecture4.3
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Geometric Progression Part #2 07 minLecture4.4
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Sequence and Series # 2 [ AP – GP – HP Practice Problem ] 22 minLecture4.5
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Arithmetic Progression and Geometric Progression [ Notes ]Lecture4.6
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Section A [ Quantitative ] - Ages Problems 6
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Ages ConceptLecture5.1
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Ages Part #1 12 minLecture5.2
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Ages Part #2 08 minLecture5.3
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Ages [ Formula ]Lecture5.4
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Ages Problem [ Notes]Lecture5.5
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Ages Problem [Practice Problems]Lecture5.6
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Section A [ Quantitative ] - Alligations and Mixtures 5
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Alligation and Mixture Part #1 18 minLecture6.1
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Alligation and Mixture Part #2 19 minLecture6.2
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Alligation and Mixtures [Formula]Lecture6.3
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Alligation and Mixtures [Handmade Notes]Lecture6.4
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Alligation and Mixtures [Practice Problems]Lecture6.5
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Section A [ Quantitative ] - Boats and Streams 5
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Boats and Stream Part #1 10 minLecture7.1
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Boats and Stream Part #2 11 minLecture7.2
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Boat and Stream [Formula]Lecture7.3
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Boat and Stream [Handmade Notes]Lecture7.4
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Boat and Stream [Practice Problems]Lecture7.5
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Section A [ Quantitative ] - Chain rule 4
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Chain Rule 15 minLecture8.1
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Chain rule [ Formula]Lecture8.2
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Chain Rule [Handmade Notes]Lecture8.3
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Chain Rule [Practice Problems]Lecture8.4
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Section A [ Quantitative ] - HCF and LCM 6
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HCF and LCM Part #1 13 minLecture9.1
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HCF and LCM Part #2 16 minLecture9.2
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HCF and LCM Part #3 18 minLecture9.3
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HCF and LCM [Formula]Lecture9.4
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HCM and LCM [Handmade Notes]Lecture9.5
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HCM and LCM [Practice Problems]Lecture9.6
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Section A [ Quantitative ] - Number System 11
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Number System Part #1 13 minLecture10.1
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Number System Part #2 12 minLecture10.2
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Number System Part #3 07 minLecture10.3
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Number System Part #4 10 minLecture10.4
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Number System Part #5 10 minLecture10.5
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Number System Part #6 10 minLecture10.6
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Number System Part #7 07 minLecture10.7
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Number System Part #8 07 minLecture10.8
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Number System Part #9 09 minLecture10.9
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Number System Part #10 09 minLecture10.10
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Number System, LCM & HCF Practice ProblemLecture10.11
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Section A [ Quantitative ] - Percentage Problem 9
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Percentage Part 1 08 minLecture11.1
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Percentage Part 2 08 minLecture11.2
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Percentage Part 3 09 minLecture11.3
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Percentage Part 4 08 minLecture11.4
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Percentage Part 5 09 minLecture11.5
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Percentage Practice Questions 27 minLecture11.6
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Percentage Problem [Formula]Lecture11.7
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Percentage Problem [ Notes ]Lecture11.8
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Percentage Problem [Practice Problems]Lecture11.9
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Section A [ Quantitative ] - Permutation and Combination 6
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Permutation and Combination Part #1 25 minLecture12.1
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Permutation and Combination Part #2 19 minLecture12.2
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Permutation and Combination Part #3 20 minLecture12.3
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Permutation and Combination [Formula]Lecture12.4
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Permutation and Combination [Handmade Notes]Lecture12.5
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Permutation and Combination [Practice Problems]Lecture12.6
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Section A [ Quantitative ] - Pipes and Cistern 7
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Pipes and Cistern – 1 [ New Video ] 27 minLecture13.1
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Pipes and Cistern – 2 [ New Video ] 23 minLecture13.2
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Pipes and Cistern Part #1 27 minLecture13.3
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Pipes and Cistern Part #2 16 minLecture13.4
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Pipes and Cistern Part #3 12 minLecture13.5
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Pipes and Cistern [Handmade Notes]Lecture13.6
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Pipes and Cistern [Practice Problems]Lecture13.7
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Section A [ Quantitative ] - Probability 7
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Probability Part #1 16 minLecture14.1
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Probability Part #2 14 minLecture14.2
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Probability Part #3 28 minLecture14.3
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Probability Part #4 28 minLecture14.4
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Probability [ Formula and Solved Examples ]Lecture14.5
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Probability [Practice Problems]Lecture14.6
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Probability All PPT_Lecture14.7
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Section A [ Quantitative ] - Ratio and Proportion 7
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Ratio & Proportion #1 13 minLecture15.1
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Ratio & Proportion #2 12 minLecture15.2
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Ratio & Proportion #3 13 minLecture15.3
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Ratio & Proportion #4 10 minLecture15.4
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Ratio & Proportion #5 08 minLecture15.5
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Ratio and Proportion [ Notes ]Lecture15.6
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Ratio and Proportion [Practice Problems]Lecture15.7
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Section A [ Quantitative ] - Simple and Compound Interest 8
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Simple Interest Part #1 20 minLecture16.1
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Simple Interest Part #2 19 minLecture16.2
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Compound Interest Part #1 25 minLecture16.3
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Compound Interest Part #2 23 minLecture16.4
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Fastest Method to Solve Compound Interest 07 minLecture16.5
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Simple Interest and compound [Formula]Lecture16.6
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Simple and Compound Interest [Notes]Lecture16.7
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Simple and Compound Interest [Practice Problems]Lecture16.8
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Section A [ Quantitative ] - Time and Work 10
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Time and Work Part #1 26 minLecture17.1
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Time and Work Part #2 26 minLecture17.2
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Time and Work Part #3 27 minLecture17.3
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Time and Work Part #4 22 minLecture17.4
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Time and Work Part #1 [ Old Videos by Sumer ] 20 minLecture17.5
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Time and Work Part #2 [ Old Videos by Sumer ] 13 minLecture17.6
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Time and Work Part #3 [ Old Videos by Sumer ] 10 minLecture17.7
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Time and Work[Formula]Lecture17.8
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Time and Work [Practice Problems]Lecture17.9
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Time and Work [Handmade Notes]Lecture17.10
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Section A [ Quantitative ] - Train Problems 8
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Train Problems Part #1 19 minLecture18.1
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Train Problems Part #2 11 minLecture18.2
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Train Problems Part #3 19 minLecture18.3
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Problems on Train – 1 26 minLecture18.4
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Problems on Train – 2 27 minLecture18.5
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Train Problems [Formula]Lecture18.6
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Train Problems [ Notes ]Lecture18.7
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Train Problems [Practice Problems]Lecture18.8
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Section A [ Verbal ] - Roots words 2
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Roots words [ Prefix and Suffix ] 13 minLecture19.1
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Roots words [ Prefix and Suffix ] NotesLecture19.2
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Section A [ Verbal ] - Reading Comprehension 6
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Reading Comprehension 13 minLecture20.1
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Reading Comprehension -1 24 minLecture20.2
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Reading Comprehension -2 19 minLecture20.3
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Reading Comprehension [ Notes + Solved Examples + Practice Problem ]Lecture20.4
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Reading Comprehension Notes 1Lecture20.5
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Reading Comprehension Notes 2Lecture20.6
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Section A [ Verbal ] - Subject Verb Agreement 2
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Subject Verb and Agreement 22 minLecture21.1
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Subject Verb Agreement NotesLecture21.2
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Section A [ Verbal ] - Synonyms And Antonyms 7
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Synonyms 28 minLecture22.1
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Antonyms 22 minLecture22.2
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Synonyms and Antonyms 14 minLecture22.3
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Synonyms And Antonyms NotesLecture22.4
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Synonyms NotesLecture22.5
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Antonyms NotesLecture22.6
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Synonyms Antonyms Practice ProblemLecture22.7
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Section A [ Verbal ] - Ability 9
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Introduction to Verbal Ability + Tenses Part #1 12 minLecture23.1
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Tenses Part #1 11 minLecture23.2
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Tenses [ Notes + Solved Examples + Practice Problem ]Lecture23.3
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Error Detection and Correction + Sentence Completion #1 14 minLecture23.4
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Sentence Completion Part #2 13 minLecture23.5
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Spotting Erorrs [ Notes + Solved Examples + Practice Problem ]Lecture23.6
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Sentence Completion [ Notes + Solved Examples + Practice Problem ]Lecture23.7
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Assumption in Verbal Reasoning 14 minLecture23.8
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Deduction in Verbal Reasoning 26 minLecture23.9
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Section A [ Reasoning ] - Blood Relation 6
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Blood Relation Part #1 12 minLecture24.1
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Blood Relation Part #2 10 minLecture24.2
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Blood Relation Part #3 10 minLecture24.3
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Blood Relation Part #4 09 minLecture24.4
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Blood Relation [ Notes ]Lecture24.5
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Blood Relation [ Practice Problem ]Lecture24.6
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Section A [ Reasoning ] - Calender 4
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Calendar 13 minLecture25.1
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Calendar Problem [Notes]Lecture25.2
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Calendar Problem [Handmade Notes]Lecture25.3
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Calendar Problem [ Practice Problem ]Lecture25.4
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Section A [ Reasoning ] - Coding Decoding 7
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Coding Decoding Part #1 07 minLecture26.1
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Coding Decoding Part #2 08 minLecture26.2
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Coding Decoding Part #3 08 minLecture26.3
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Coding Decoding Part #4 06 minLecture26.4
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Coding Decoding Part #5 10 minLecture26.5
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Coding Decoding [Notes]Lecture26.6
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Coding Decoding [ Practice Problem]Lecture26.7
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Section A [ Reasoning ] - Data Sufficiency 3
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Data Sufficiency 09 minLecture27.1
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Data Sufficiency [ Practice Problem ]Lecture27.2
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Data Sufficiency [ Notes ]Lecture27.3
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Section A [ Reasoning ] - Clock Problems 6
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Clock Problems Part #1 13 minLecture28.1
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Clock Problems Part #2 17 minLecture28.2
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Clock Problems Part #3 10 minLecture28.3
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Clock Problem [Handmade Notes]Lecture28.4
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Clock Problem [ Notes]Lecture28.5
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Clock Problem [ Practice Problem ]Lecture28.6
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Section A [ Reasoning ] - Direction 8
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Direction Part #1 07 minLecture29.1
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Direction Part #2 08 minLecture29.2
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Direction Part #3 09 minLecture29.3
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Direction Part #4 04 minLecture29.4
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Direction Part #5 07 minLecture29.5
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Direction Part #6 06 minLecture29.6
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Direction [ Notes ]Lecture29.7
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Direction [ Practice Problem ]Lecture29.8
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Section A [ Reasoning ] - Number Series 6
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Number Series Part #1 09 minLecture30.1
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Number Series Part #2 08 minLecture30.2
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Number Series Part #3 08 minLecture30.3
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Number Series Part #4 04 minLecture30.4
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Number Series [Notes]Lecture30.5
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Number Series [Practice Problems]Lecture30.6
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Section A [ Reasoning ] - Seating Arrangement 8
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Seating Arrangement Part #1 08 minLecture31.1
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Seating Arrangement Part #2 12 minLecture31.2
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Seating Arrangement Part #3 11 minLecture31.3
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Seating Arrangement Part #4 06 minLecture31.4
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Seating Arrangement Part #5 07 minLecture31.5
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Seating Arrangement Part #6 06 minLecture31.6
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Seating Arrangement [Notes]Lecture31.7
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Seating Arrangement [ Practice Problem ]Lecture31.8
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Section A [ Reasoning ] - Visual Reasoning 6
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Visual Reasoning Part #1 10 minLecture32.1
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Visual Reasoning Part #2 12 minLecture32.2
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Visual Reasoning Part #3 11 minLecture32.3
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Visual Reasoning Part #4 11 minLecture32.4
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Visual Reasoning [ Notes ]Lecture32.5
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Visual Reasoning [ Practice Problem ]Lecture32.6
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Section A - Computer Fundamental 12
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1. Introduction 10 minLecture33.1
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2. Computer Memory and its types 14 minLecture33.2
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3. Motherboard and its component 08 minLecture33.3
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4. Ports, Cables and Graphic Card 09 minLecture33.4
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5. Storage Devices 07 minLecture33.5
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6. Number System 11 minLecture33.6
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7. Machine Language 06 minLecture33.7
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8. Operating Systems 10 minLecture33.8
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9. AR and VR 07 minLecture33.9
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10. Computer Virus 08 minLecture33.10
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Computer Fundamental [Notes]Lecture33.11
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Computer Fundamental Practice ProblemLecture33.12
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Section A [ Quantitative ] - Decimal and Fractions 2
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1. Decimal and Fractions 20 minLecture34.1
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2. Decimal and Fractions 15 minLecture34.2
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Section A [ Quantitative ] - Time, Speed and Distance 4
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Time, Speed & Distance – 1 18 minLecture35.1
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Time, Speed & Distance – 2 22 minLecture35.2
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Time, Speed & Distance – 3 28 minLecture35.3
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Time, Speed & Distance – Practice Question 34 minLecture35.4
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Section A [ Quantitative ] - Perimeter, Area, Volume 2
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Perimeter, Area, Volume – 1 20 minLecture36.1
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Perimeter, Area, Volume – 2 20 minLecture36.2
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Section A [ Quantitative ] - Simplification and Approximation 2
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Simplification – 1 11 minLecture37.1
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Simplification – 2 11 minLecture37.2
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Section A [ Quantitative ] - Surds and Indices 2
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Section A [ Quantitative ] - Odd man out and series 2
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Odd man out and series -1 19 minLecture39.1
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Odd man out and series -2 17 minLecture39.2
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Section A [ Verbal ] - Sentence Corrections 3
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Sentence Corrections – 1 23 minLecture40.1
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Sentence Corrections – 2 22 minLecture40.2
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Sentence Correction NotesLecture40.3
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Section A [ Verbal ] - Fill in the Blanks 9
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Conjunction 10 minLecture41.1
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Prepositions 11 minLecture41.2
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Articles 15 minLecture41.3
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Tenses 21 minLecture41.4
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Conjunction NotesLecture41.5
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Prepositions NotesLecture41.6
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Articles NotesLecture41.7
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Tenses NotesLecture41.8
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Tenses Practice ProblemsLecture41.9
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Section A [ Verbal ] - Paragraph 2
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Paragraph 22 minLecture42.1
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Paragraph FormationLecture42.2
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Section A [ Verbal ] - Error Identification 2
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Error Identification 13 minLecture43.1
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Error Identification NotesLecture43.2
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Section A [ Verbal ] - Sentence Rearrangement 3
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Rearrangements – 1 21 minLecture44.1
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Rearrangements – 2 21 minLecture44.2
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Sentence Rearrangement NotesLecture44.3
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Section A [ Verbal ] - Sentence Completion 2
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Sentence Completion 18 minLecture45.1
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Sentence Completion NotesLecture45.2
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Section A [ Verbal ] - Idioms & Phrases 2
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Idioms & Phrases – 1 24 minLecture46.1
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Idioms & Phrases – 2 25 minLecture46.2
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TENSES
Tense can be defined as a word form used to indicate the time of occurrence of an
incident with reference to the moment of speaking. It indicates the completion or
continuance of an activity.
Types of Tenses
● Past
● present
● Future
These tenses can further be categorized into 4 types:
● Simple Tense
● Continuous Tense
● Perfect Tense
● Perfect Continuous Tense
Past Tense Rules
Past tense is used to describe a past activity or action. It is a form of the verb that defines the
events that have already occurred. Examples
● Reema attended the wedding functions.
● He left before I reached.
● Priya wrote a letter to her friends from camp.
Present Tense Rules
The present tense is used to describe the current or present being, situation, or event. It is a
form of the verb that defines the events that are currently happening. Examples
● I am going to the office
● She has been part of this group for 4 years now.
● The concert is amazing.

Future Tense Rules
The future tense is used to describe the future events that haven’t occurred but possibly will
occur in the future. It is a form of the verb that will occur in the future & not exist currently.
Examples
● She will be dancing to classical music.
● We will be shifting to the house upstate tomorrow morning.
● The train will leave in 10 minutes.
Tenses
Tenses Rule
Past simple tense
Subject + V2 + Object
Past Perfect tense
Subject + had + V3 + Object

Past Continuous tense
Subject + was + V1 + ing +
Object (Singular)
Subject + were + V1 + ing +
Object (Plural)
Past perfect continuous
Subject + had been + V1 +
tense
ing + Object
Present Simple tense
Subject + V1 + s/es + Object
(Singular) Subject +
V1 + Object (Plural)
Present Perfect tense
Subject + has + V3 + Object
(Singular) Subject +
have + V3 + Object
(Plural)
Present Continuous tense
Subject + is/am/are + V1 +
ing + object
Present perfect continuous
Subject + has been + V1 +
tense
ing + Object
(Singular)Subject +
have been + V1 + ing +
Object (Plural)
Future Simple tense
Subject + will/shall + V1 +
Object
Future Perfect tense
Subject + will have/shall
have + V3 + Object
Future Continuous tense
Subject + will be/shall be +
ing + V1 + Object
Future Perfect Continuous
Subject + will have been +
tense
V1 + ing + Object
V1 = first form of the verb
V2 = second form of the verb
V3 = third form of the verb

Solved Examples
1) Air pollution caused by industrial effluents has been studied (A)/ for years, but only
recently has (B)/ the harmful effects of noise pollution become known.(C)/No error(D)
Correct Answer: B
Explanation: use have instead of has as harmful effects of noise pollution is plural.
2) The ministry was considered several proposals (A)/ for the development of small
and medium enterprises (B)/during Budget discussions.(C)/No error (D)
Correct Answer: A
Explanation: Use simple past tense. (The ministry considered several proposals)
3) Having work(A)/ in both public and private sector banks(B)/she is the most suitable
person to take over the post of the chairman.(C)/No error(D)
Correct Answer: A
Explanation: Replace work by worked as the sentence is of past tense.
4) Rohit started a very small business two years ago (A)/ but it grew very fast (B)/as
the country is experiencing a boom at that time.(C)/No error(D)
Correct Answer: C
Explanation: The sentence is in the past tense, so use was experiencing.
5) Keeping in mind the current market conditions (A)/ it has better for us (B)/ to invest
in the infrastructure structure. (C)/No error(D)
Correct Answer: B

Explanation: Replace it has better for us with ‘it is better for us’. The sentence is in
the present tense.
Practice Problems
1) Our equipment gets (A)/ damage very often in summer (B)/ because there are too
many power cuts. (C)/No error (D)
Correct Answer: B
Explanation: Use damaged instead of damage as the sentence is in passive voice. The
third form of the verb is used in passive voice.
2) Most children liked to rest in the afternoon (A)/ after they returned from school
(B)/but my son seems to have an inexhaustible source of energy. (C)/No error (D)
Correct Answer: C
Explanation: replace seems by seemed as the sentence is in the past tense.
3) The cutting down on costs (A)/was the main reason for the firm to survive (B)/even
during a very difficult period. (C)/No error (D)
Correct Answer: D
Explanation: No error
4) I will go (A)/ for the dance classes tomorrow (B)/ if I have recovered from fever.
(C)/No error. (D)
Correct Answer: C
Explanation: If I have recovered is to be replaced by if I recover. Sentences of future
beginning with if should be in simple present.
5) The principal announced (A)/ in the school assembly that the school fees (B)/ will
be hiked from the beginning of the next academic session. (C)/No error(D)
Correct Answer: C
Explanation: Replace will with would. (The sentence is in indirect speech)

6) The terrorist did not (A)/ confessed his crime even till the very end (B)/of his trail
and said that he was innocent.(C) /No error (D)
Correct Answer: B
Explanation: Replace confessed with confess. (We use the first form of the verb with
did).
7) If the industrial sector continues to grow(A)/ at the same rate for the next few
months(B)/ I think it has a high growth rate this year.(C)/No error (D)
Correct Answer: C
Explanation: Replace I think it has with it will have as it is of the future tense.
8) Results find that girls (A)/ played not only more than boys(B)/ but also performed
better in many fields.(C)/No error (D)
Correct Answer: A
Explanation: Replace find with found as the sentence is of past tense.
9) Celebrating her fifteen long years in the film industry (A)/the actor announce that he
would be doing a new show (B)/on television which would be done completely free of
cost.(C)/No error (D)
Correct Answer: B
Explanation: Replace announce with announced as the sentence is of past tense.
10) Had I known (A)/ the weather forecast earlier (B)/I would not make plans to go
out. (C)/ No error (D)
Correct Answer: C
Explanation: replace ‘would not make’ with would not have made. (for imaginary
sentences of the past tense would have and the third form of the verb
is used). It’s a conditional sentence.

11) If you to talk to him on this sensitive matter(A)/ it is probable(B)/ that he will not
listen to you at all.(C)/ No error (D)
Correct Answer: D
Explanation: No error
12) On many occasions (A)/we did helped the poor (B)/ people by way of giving them
food to eat and clothes to put on. (C)/ No error (D)
Correct Answer: B
Explanation: Omit did
13) The farewell party continued (A)/till midnight as more and more(B)/ guests join in
the fun and frolic.(C)/ No error (D)
Correct Answer: C
Explanation: replace join with joined as the sentence is of past tense.
14) The market continues to be positive (A)/ and we expected the trend (B)/ to
continue in the next quarter also. (C)/No error (D)
Correct Answer: B
Explanation: Replace expect with expect as the latter part of the sentence is of future
tense.
15) Big zamindars in the villages(A)/ who were till now paid for electricity(B)/ at
subsidized rates will soon have to pay the government at full rates.(C)/ No error(D)
Correct Answer: B
Explanation: Replace paid with paying as the sentence is of past continuous tense.


