Course module

General Aptitude & ReasoningISRO Scientist/Engineer 'SC'

Lessons
909
Duration
117 hr 22 min
PYQs
80
Practice
9153

8% of this course's PYQ weight is covered in this module.

Syllabus index

Lessons in this module

Percentage

Conversion Between Fractions (Ratio) & Percentages

  1. Demo: Basics of Percentages, Percentage - Fraction ConversionsStandard Video
  2. [Notes] Basics of Percentages, Percentage - Fraction ConversionsPdf
  3. Important Property, Trick to find 10 & 1 percent of any numberDrm Video
  4. [Notes] Important Property, Trick to find 10 & 1 percent of any numberPdf
  5. Short Tricks to Remember Ratio to Percentage Table Part 1Drm Video
  6. [Notes] Short Tricks to Remember Ratio to Percentage Table Part 1Pdf
  7. Short Tricks to Remember Ratio to Percentage Table Part 2Drm Video
  8. [Notes] Short Tricks to Remember Ratio to Percentage Table Part 2Pdf
  9. Short Tricks to Remember Ratio to Percentage Table Part 3Drm Video
  10. [Notes] Short Tricks to Remember Ratio to Percentage Table Part 3Pdf
  11. Short Tricks to Remember Ratio to Percentage Table Part 4Drm Video
  12. [Notes] Short Tricks to Remember Ratio to Percentage Table Part 4Pdf
  13. Practice Problems on Ratio to Percentage ConversionDrm Video
  14. [Notes] Practice Problems on Ratio to Percentage ConversionPdf
  15. Practice Problems on Percentage to Ratio ConversionDrm Video
  16. [Notes] Practice Problems on Percentage to Ratio ConversionPdf
  17. Question on Ratio to Percentage ConversionDrm Video
  18. [Notes] Question on Ratio to Percentage ConversionPdf

Ratio and Proportion (Ratios)

Average

Profit and Loss

Time and Work

Speed Time and Distance

Average Speed

  1. Concept & Short Tricks to calculate AVERAGE SPEED (1)Drm Video
  2. [Notes] Concept & Short Tricks to calculate AVERAGE SPEED (1)Pdf
  3. Concept & Short Tricks to calculate AVERAGE SPEED (2)Drm Video
  4. [Notes] Concept & Short Tricks to calculate AVERAGE SPEED (2)Pdf
  5. Concept & Short Tricks to calculate AVERAGE SPEED (3)Drm Video
  6. [Notes] Concept & Short Tricks to calculate AVERAGE SPEED (3)Pdf
  7. Average - Short Tricks to Find Average SpeedDrm Video
  8. [Notes] Average - Short Tricks to Find Average SpeedPdf
  9. Important Practice Questions on AVERAGE SPEED (1)Drm Video
  10. [Notes] Important Practice Questions on AVERAGE SPEED (1)Pdf
  11. Important Practice Questions on AVERAGE SPEED (2)Drm Video
  12. [Notes] Important Practice Questions on AVERAGE SPEED (2)Pdf
  13. Important Practice Questions on AVERAGE SPEED (3)Drm Video
  14. [Notes] Important Practice Questions on AVERAGE SPEED (3)Pdf

Train Problems

  1. Concept of Relative Speed Required for Problem on TrainsDrm Video
  2. [Notes] Concept of Relative Speed Required for Problem on TrainsPdf
  3. Case 1_ Train Crossing a stationary pole, signal or manDrm Video
  4. [Notes] Case 1_ Train Crossing a stationary pole, signal or manPdf
  5. Case 2_ Train Crossing a Platform, Bridge or TunnelDrm Video
  6. [Notes] Case 2_ Train Crossing a Platform, Bridge or TunnelPdf
  7. Case 3_ Two Trains Crossing One Other(Opposite Direction)Drm Video
  8. [Notes] Case 3_ Two Trains Crossing One Other(Opposite Direction)Pdf
  9. Case 4_ Two Trains Crossing One Other (Same Direction)Drm Video
  10. [Notes] Case 4_ Two Trains Crossing One Other (Same Direction)Pdf
  11. Conventions To Solve Problems on Train + Tricky QuestionsDrm Video
  12. [Notes] Conventions To Solve Problems on Train + Tricky QuestionsPdf
  13. Short Trick To Solve Problem on StoppagesDrm Video
  14. [Notes] Short Trick To Solve Problem on StoppagesPdf
  15. Important Question & Short Trick on Train Problems (1)Drm Video
  16. [Notes] Important Question & Short Trick on Train Problems (1)Pdf
  17. Important Question & Short Trick on Train Problems (2)Drm Video
  18. [Notes] Important Question & Short Trick on Train Problems (2)Pdf
  19. Important Question & Short Trick on Train Problems (3)Drm Video
  20. [Notes] Important Question & Short Trick on Train Problems (3)Pdf

Number System

Algebra

HCF LCM

Finding HCF

  1. Demo: Tricks for HCF by Inspection, HCF by Prime FactorizationStandard Video
  2. [Notes] Tricks for HCF by Inspection, HCF by Prime FactorizationPdf
  3. Demo: Trick to find HCF by Long Division MethodStandard Video
  4. [Notes] Trick to find HCF by Long Division MethodPdf
  5. Demo: Short Trick to find HCF by minimum difference methodStandard Video
  6. [Notes] Short Trick to find HCF by minimum difference methodPdf
  7. Short Trick to find HCF by using smallest elementDrm Video
  8. [Notes] Short Trick to find HCF by using smallest elementPdf
  9. An Important Property of HCF & LCM + Practice QuestionDrm Video
  10. [Notes] An Important Property of HCF & LCM + Practice QuestionPdf
  11. How to find HCF Quickly with the help of given optionsDrm Video
  12. [Notes] How to find HCF Quickly with the help of given optionsPdf
  13. Short Trick to find HCF of Big NumbersDrm Video
  14. [Notes] Short Trick to find HCF of Big NumbersPdf
  15. Short Trick to find HCF of more than 2 numbersDrm Video
  16. [Notes] Short Trick to find HCF of more than 2 numbersPdf
  17. Short Trick to find HCF using Co-Prime Numbers ConceptDrm Video
  18. [Notes] Short Trick to find HCF using Co-Prime Numbers ConceptPdf

Finding LCM

  1. What is a multiple What is LCM Find LCM by inspectionDrm Video
  2. [Notes] What is a multiple What is LCM Find LCM by inspectionPdf
  3. Short Trick to Find LCM in just 5 secondsDrm Video
  4. [Notes] Short Trick to Find LCM in just 5 secondsPdf
  5. Short Trick to find LCM using Division methodDrm Video
  6. [Notes] Short Trick to find LCM using Division methodPdf
  7. Short Trick to find LCM using Prime FactorizationDrm Video
  8. [Notes] Short Trick to find LCM using Prime FactorizationPdf
  9. Short Trick to find LCM using Co-Prime Numbers ConceptDrm Video
  10. [Notes] Short Trick to find LCM using Co-Prime Numbers ConceptPdf
  11. Short Trick to find LCM of more than 2 numbersDrm Video
  12. [Notes] Short Trick to find LCM of more than 2 numbersPdf
  13. Short Trick to find LCM of big numbersDrm Video
  14. [Notes] Short Trick to find LCM of big numbersPdf
  15. Short Trick to find LCM of 2 numbers when HCF is givenDrm Video
  16. [Notes] Short Trick to find LCM of 2 numbers when HCF is givenPdf

Divisibility Rules

Divisibility Rules for all Numbers

  1. Demo: Divisibility Rules of 2, 3 and 4Standard Video
  2. [Notes] Divisibility Rules of 2, 3 and 4Pdf
  3. Demo: Divisibility Rules of 5, 6 and 7Standard Video
  4. [Notes] Divisibility Rules of 5, 6 and 7Pdf
  5. Divisibility Rules of 8, 9, 10 and 11Drm Video
  6. [Notes] Divisibility Rules of 8, 9, 10 and 11Pdf
  7. Divisibility Rules of 11, 12 and 13Drm Video
  8. [Notes] Divisibility Rules of 11, 12 and 13Pdf
  9. Amazing Short Trick for Divisibility of 7 and 13Drm Video
  10. [Notes] Amazing Short Trick for Divisibility of 7 and 13Pdf
  11. All Divisibility Rules of 13 in a single videoDrm Video
  12. [Notes] All Divisibility Rules of 13 in a single videoPdf
  13. Divisibility Rules of 14 and 15Drm Video
  14. [Notes] Divisibility Rules of 14 and 15Pdf
  15. Divisibility Rules of 16Drm Video
  16. [Notes] Divisibility Rules of 16Pdf
  17. Divisibility Rules of 17 and 18Drm Video
  18. [Notes] Divisibility Rules of 17 and 18Pdf
  19. Divisibility Rules of 19Drm Video
  20. [Notes] Divisibility Rules of 19Pdf
  21. Divisibility Rules of 20, 21, 22 and 23Drm Video
  22. [Notes] Divisibility Rules of 20, 21, 22 and 23Pdf
  23. Divisibility Rules of 24, 25 and 26Drm Video
  24. [Notes] Divisibility Rules of 24, 25 and 26Pdf
  25. Divisibility Rules of 27Drm Video
  26. [Notes] Divisibility Rules of 27Pdf
  27. Divisibility Rules of 28, 29, 30 and 31Drm Video
  28. [Notes] Divisibility Rules of 28, 29, 30 and 31Pdf
  29. Divisibility Rules of 37, 41 and 43Drm Video
  30. [Notes] Divisibility Rules of 37, 41 and 43Pdf
  31. Short Trick to remember divisibility rules from 11 to 50Drm Video
  32. [Notes] Short Trick to remember divisibility rules from 11 to 50Pdf
  33. Divisibility Rules of Important Numbers From 31 to 1000Drm Video
  34. [Notes] Divisibility Rules of Important Numbers From 31 to 1000Pdf

Simple Interest and Compound Interest

Simple Interest – Applications

  1. Tricks & Questions on money becoming multiple times on SIDrm Video
  2. [Notes] Tricks & Questions on money becoming multiple times on SIPdf
  3. Questions on Extra Amount Received on Extra Interest RateDrm Video
  4. [Notes] Questions on Extra Amount Received on Extra Interest RatePdf
  5. Short Trick for Questions on Variable Rate of InterestDrm Video
  6. [Notes] Short Trick for Questions on Variable Rate of InterestPdf
  7. Short Trick for Questions on Difference in SIDrm Video
  8. [Notes] Short Trick for Questions on Difference in SIPdf
  9. Short Trick for Questions on Difference in AmountDrm Video
  10. [Notes] Short Trick for Questions on Difference in AmountPdf
  11. Questions on Principal Money Divided into PartsDrm Video
  12. [Notes] Questions on Principal Money Divided into PartsPdf
  13. Simple Interest Important Practice Questions (Set 2)Drm Video
  14. [Notes] Simple Interest Important Practice Questions (Set 2)Pdf

Mixture and Alligation

Alligation Rule (Core Concept + Two-Ingredient Mixture)

  1. What is Mixture & AlligationDrm Video
  2. [Notes] What is Mixture & AlligationPdf
  3. Where to apply Alligation Rule (Applications)Drm Video
  4. [Notes] Where to apply Alligation Rule (Applications)Pdf
  5. TCS Previous Year Question on Alligation RuleDrm Video
  6. [Notes] TCS Previous Year Question on Alligation RulePdf
  7. WIPRO Previous Year Question on Alligation RuleDrm Video
  8. [Notes] WIPRO Previous Year Question on Alligation RulePdf
  9. BANK PO & AMCAT Previous Year Question on Alligation RuleDrm Video
  10. [Notes] BANK PO & AMCAT Previous Year Question on Alligation RulePdf
  11. GATE Exam (Mechanical) Asked Question on Alligation RuleDrm Video
  12. [Notes] GATE Exam (Mechanical) Asked Question on Alligation RulePdf
  13. COGNIZANT & ACCENTURE Asked Questions on Alligation RuleDrm Video
  14. [Notes] COGNIZANT & ACCENTURE Asked Questions on Alligation RulePdf

Profit–Loss Based Alligation (Cost Price, Selling at CP, Fake Profit)

  1. Solving PROFIT & LOSS Questions Using Alligation RuleDrm Video
  2. [Notes] Solving PROFIT & LOSS Questions Using Alligation RulePdf
  3. Water mixed to a mixture & sold at CP to make profit (1)Drm Video
  4. [Notes] Water mixed to a mixture & sold at CP to make profit (1)Pdf
  5. Water mixed to a mixture & sold at CP to make profit (2)Drm Video
  6. [Notes] Water mixed to a mixture & sold at CP to make profit (2)Pdf
  7. Water mixed to a mixture & sold at CP to make profit (3)Drm Video
  8. [Notes] Water mixed to a mixture & sold at CP to make profit (3)Pdf
  9. Selling item in 2 parts with given profit% or loss% (1)Drm Video
  10. [Notes] Selling item in 2 parts with given profit% or loss% (1)Pdf
  11. Selling item in 2 parts with given profit% or loss% (2)Drm Video
  12. [Notes] Selling item in 2 parts with given profit% or loss% (2)Pdf
  13. Selling item in 2 parts with given profit% or loss% (3)Drm Video
  14. [Notes] Selling item in 2 parts with given profit% or loss% (3)Pdf

Age Problems

Pipe and Cistern

Basic Concepts, Formulas and Terminology

  1. Pipes & CisternsDrm Video
  2. [Notes] Pipes & CisternsPdf

Partnership

Speed Mathematics and Basic Mathematics

Data Interpretation

Sequence and Series (Series)

Statistics

Mean, Median, and Mode for grouped data

  1. Advance ConceptsDrm Video
  2. [Notes] Advance ConceptsPdf

Powers and Exponents (Surds and Indices)

Arithmetic

Coding Decoding

Series (Number and Letter Series) (Numerical Relations and Reasoning)

Blood Relations

Directions (Direction Test)

Clock

Calendar

Formulas and High - Yield Questions

  1. Practice Questions & Short TricksDrm Video
  2. [Notes] Practice Questions & Short TricksPdf
  3. Practice Questions & Short TricksDrm Video
  4. [Notes] Practice Questions & Short Tricks 2Pdf
  5. Practice Questions & Short TricksDrm Video
  6. [Notes] Practice Questions & Short Tricks 3Pdf
  7. Important Practice Questions & Short TricksDrm Video
  8. [Notes] Important Practice Questions & Short TricksPdf
  9. Important Practice Questions & Short TricksDrm Video
  10. [Notes] Important Practice Questions & Short Tricks 2Pdf
  11. Important Practice Questions & Short TricksDrm Video
  12. [Notes] Important Practice Questions & Short Tricks 3Pdf
  13. Important Practice Questions & Short TricksDrm Video
  14. [Notes] Important Practice Questions & Short Tricks 4Pdf
  15. Quick Revision, Short Tricks & QuestionsDrm Video
  16. [Notes] Quick Revision, Short Tricks & QuestionsPdf

Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning)

Syllogisms

Analytical Reasoning (Counting Figures Reasoning)

Analogy

Ranking, Order and Sequence

Logical Sequence Of Words

Inequality

Venn Diagram

Data Sufficiency

Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning)

Cubes & Dices

Puzzle Solving (Puzzles)

Seating Arrangements

Linear Algebra

System of Linear Equations

  1. System of Linear EquationsDrm Video
  2. [Notes] System of Linear EquationsPdf
  3. Solution SetDrm Video
  4. [Notes] Solution SetPdf
  5. Under-determined & Over-determined SystemDrm Video
  6. [Notes] Under-determined & Over-determined SystemPdf
  7. Independence of System of Linear EquationsDrm Video
  8. [Notes] Independence of System of Linear EquationsPdf
  9. Consistent System of EquationsDrm Video
  10. [Notes] Consistent System of EquationsPdf
  11. Elimination of Variables (Solving System of Linear Equation)Drm Video
  12. [Notes] Elimination of Variables (Solving System of Linear Equation)Pdf
  13. Echelon Form - Gauss Elimination Method (Solving Equations)Drm Video
  14. [Notes] Echelon Form - Gauss Elimination Method (Solving Equations)Pdf
  15. Diagonal Matrix- Gauss Elimination Method- Solving EquationsDrm Video
  16. [Notes] Diagonal Matrix - Gauss Elimination Method-Solving EquationsPdf
  17. Shortcut Tricks for Solving System of Linear EquationDrm Video
  18. [Notes] Shortcut Tricks for Solving System of Linear EquationsPdf
  19. Cramer's Rule (Solving System of Linear Equation)Drm Video
  20. [Notes] Cramer's Rule (Solving System of Linear Equation)Pdf
  21. Matrix Solution (Solving System of Linear Equation)Drm Video
  22. [Notes] Matrix Solution (Solving System of Linear Equations)Pdf
  23. Homogeneous System of Linear EquationsDrm Video
  24. [Notes] Homogeneous System of Linear EquationsPdf

Calculus

Limits

  1. Introduction to LimitsDrm Video
  2. [Notes] Introduction to LimitsPdf
  3. Important Properties of LimitsDrm Video
  4. [Notes] Important Properties of LimitsPdf
  5. Indeterminate FormsDrm Video
  6. [Notes] Indeterminate FormsPdf
  7. Non-Indeterminate FormsDrm Video
  8. Non-Indeterminate FormsPdf
  9. Solving Limits : Substitution MethodDrm Video
  10. [Notes] Solving Limits-Substitution MethodPdf
  11. Solving Limits: Tabular & Approximation MethodDrm Video
  12. [Notes] Solving Limits-Tabular & Approximation MethodPdf
  13. Solving Limits: Factorization MethodDrm Video
  14. [Notes] Solving Limits-Factorization MethodPdf
  15. Solving Limits: Expansion MethodDrm Video
  16. [Notes] Solving Limits-Expansion MethodPdf
  17. Solving Limits: L Hopital's RuleDrm Video
  18. [Notes] Solving Limits-L Hopital's RulePdf
  19. Questions on L Hopital's Rule (Part 1)Drm Video
  20. [Notes] Questions on L Hopital's Rule (Part 1)Pdf
  21. Questions on L Hopital's Rule (Part 2)Drm Video
  22. [Notes] Questions on L Hopital's Rule (Part 2)Pdf
  23. Proof of L Hopital's RuleDrm Video
  24. [Notes] Proof of L Hopital's RulePdf
  25. Some Notable Special LimitsDrm Video
  26. [Notes] Some Notable Special LimitsPdf

Differentiability and Differentiation

  1. Differentiation Rules & FormulasDrm Video
  2. DIFFERENTIABILITY - Mathematical DefinitionDrm Video
  3. [Notes] DIFFERENTIABILITY - Mathematical DefinitionPdf
  4. Differentiability - Geometric DefinitionDrm Video
  5. [Notes] Differentiability - Geometric DefinitionPdf
  6. How to Geometrically identify Non-Differentiability?Drm Video
  7. [Notes] How to Geometrically identify Non-Differentiability.pptxPdf
  8. GATE CS 2016 - Set 2 - 1 Mark QuestionDrm Video
  9. [Notes] GATE CS 2016 - Set 2 - 1 Mark QuestionPdf
  10. GATE CS 2014 - Set 1 - 2 Marks QuestionDrm Video
  11. [Notes] GATE CS 2014 - Set 1 - 2 Marks QuestionPdf
  12. Rolle’s TheoremDrm Video
  13. [Notes] Rolle’s TheoremPdf
  14. GATE CS 2014 – Set 1 – 1 Mark QuestionDrm Video
  15. [Notes] GATE CS 2014 – Set 1 – 1 Mark QuestionPdf
  16. Lagrange's Mean Value TheoremDrm Video
  17. [Notes] Lagrange's Mean Value TheoremPdf
  18. Applications of Mean Value TheoremDrm Video
  19. [Notes] Applications of Mean Value TheoremPdf
  20. Cauchy’s Extended Mean Value TheoremDrm Video
  21. [Notes] Cauchy’s Extended Mean Value TheoremPdf

Maxima and Minima

  1. Stationary Point & Critical PointDrm Video
  2. [Notes] Stationary Point & Critical PointPdf
  3. Maxima & MinimaDrm Video
  4. [Notes] Maxima & MinimaPdf
  5. Monotonic FunctionsDrm Video
  6. [Notes] Monotonic FunctionsPdf
  7. How to Mathematically find Maxima & Minima?Drm Video
  8. [Notes] How to Mathematically find Maxima & MinimaPdf
  9. Finding Maxima & Minima (Practice Questions Set 1)Drm Video
  10. [Notes] Finding Maxima & Minima (Practice Questions Set 1)Pdf
  11. Finding Maxima & Minima (Practice Questions Set 2)Drm Video
  12. [Notes] Finding Maxima & Minima (Practice Questions Set 2)Pdf
  13. Finding Maxima & Minima (Practice Questions Set 3)Drm Video
  14. [Notes] Finding Maxima & Minima (Practice Questions Set 3)Pdf
  15. Finding Maxima & Minima (Practice Questions Set 4)Drm Video
  16. [Notes] Finding Maxima & Minima (Practice Questions Set 4)Pdf
  17. Finding Maxima & Minima (Practice Questions Set 5)Drm Video
  18. [Notes] Finding Maxima & Minima (Practice Questions Set 5)Pdf
  19. Finding Maxima & Minima (Practice Questions Set 6)Drm Video
  20. [Notes] Finding Maxima & Minima (Practice Questions Set 6)Pdf

Integration

  1. Integration & Indefinite IntegralsDrm Video
  2. [Notes] Integration & Indefinite IntegralsPdf
  3. Definite IntegralsDrm Video
  4. [Notes] Definite IntegralsPdf
  5. Properties of Definite IntegralsDrm Video
  6. [Notes] Properties of Definite IntegralsPdf
  7. All Formulas of IntegrationDrm Video
  8. [Notes] All Formulas of IntegrationPdf
  9. Solving Integration: Substitution MethodDrm Video
  10. [Notes] Solving Integration- Substitution MethodPdf
  11. Solving Integration: Partial Fractions MethodDrm Video
  12. [Notes] Solving Integration- Partial Fractions MethodPdf
  13. Complications in Partial Fractions MethodDrm Video
  14. [Notes] Complications in Partial Fractions MethodPdf
  15. Solving Integration: Integration by Parts MethodDrm Video
  16. [Notes] Solving Integration-Integration by Parts MethodPdf
  17. GATE Question on Integration by Parts MethodDrm Video
  18. [Notes] GATE Question on Integration by Parts MethodPdf
  19. GATE CS 2000 QuestionDrm Video
  20. [Notes] GATE CS 2000 QuestionPdf
  21. GATE CS 2009 QuestionDrm Video
  22. [Notes] GATE CS 2009 QuestionPdf
  23. GATE CS 2011 – 2 Marks QuestionDrm Video
  24. [Notes] GATE CS 2011 – 2 Marks QuestionPdf
  25. GATE CS 2014 – Set 3 QuestionDrm Video
  26. [Notes] GATE CS 2014 – Set 3 QuestionPdf

Trigonometry

Vectors

Probability

Mensuration and Geometry

Previous-year questions

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