General Aptitude
General Aptitude is worth 15 marks in every GATE paper. These lessons give the standard method for each question type, with worked examples whose numbers are computed by small programs, and a section on English usage and reading comprehension with original passages.
1Quantitative Aptitude
- Numbers and PercentagesDivisibility rules, HCF and LCM, remainders and last digits, counting multiples, percentages, percentage change and successive changes.
- Ratios, Averages and MixturesRatios and proportions, combining ratios, sharing in a ratio, averages and weighted averages, average speed, alligation for mixtures, and age problems.
- Time and Work, Pipes and CisternsWork rates, people working together and in shifts, the man-days rule, and pipes that fill and empty a tank.
- Speed, Distance and TimeDistance = speed × time, unit conversion, relative speed, trains passing poles, platforms and each other, boats in streams, and meeting problems.
- Profit, Loss and InterestCost price, selling price and marked price, profit and loss percentages, successive discounts, simple interest, compound interest (yearly and more often), and the difference between them.
- Data InterpretationReading tables and charts, totals, shares and averages, percentage growth year on year, ratios between series, and approximation strategies for data questions.
2Analytical Reasoning
- Logical and Analytical ReasoningSyllogisms with Venn diagrams, statements and conclusions, direction sense, blood relations, seating arrangements solved systematically, coding and decoding, and number and letter series.
- Spatial Reasoning, Clocks and CalendarsPainted cubes, counting squares and rectangles in a grid, mirror images, rotations and paper folding, the angle between clock hands, and finding the day of the week.