517 Quantitative Aptitude Questions with Solutions
517 quantitative aptitude questions across 13 topics, each with a time target, hints, a worked solution and an approach note.
- Topics: 13
- Questions: 517
- Cost: Free, unlimited on every plan
Arithmetic and algebra the way placement papers ask it — fast, exact, and full of shortcuts.
Quantitative Aptitude in placement papers
Quantitative aptitude is arithmetic against the clock: percentages, ratios, rates and counting, where a method beats a long calculation. Of the 29 patterns in the mock-test catalogue, 17 draw quantitative questions, usually as a section of 10 to 30.
How it is timed
Most patterns allow 60 to 84 seconds a question. The patterns modelled on Wipro's NLTH, HCLTech and Adobe give a minute (16 questions in 16 minutes, 15 in 15, 20 in 20); those modelled on the TCS NQT Foundation and Cognizant GenC give 75 and 84 seconds (20 in 25, 25 in 35). Two are slow by design: the patterns modelled on Infosys's Systems Engineer paper and Zoho's Round 1 set 10 questions in 35 minutes and four minutes a question. In nine patterns about a fifth of the numerical section is data interpretation, so the TCS Foundation's 20 hold 16 quantitative questions and 4 data ones. Only the patterns modelled on Tech Mahindra and Goldman Sachs take marks off for a wrong answer.
How to practise
Start with the topics the pattern guides name most often: Percentages, Ratio & Proportion, Profit & Loss, Time & Work, Time, Speed & Distance and Averages. Then Number System, Simple & Compound Interest, Problems on Ages, Mixtures & Alligation and Mensuration; the harder papers add Permutations & Combinations and Probability. Each topic page opens with its formulas.
Typical traps
Taking a percentage of the wrong base, when a change is measured against the starting value; and averaging two speeds over equal distances, when the average speed is 2ab ÷ (a + b), not (a + b) ÷ 2.
Quantitative Aptitude topics
- Number System 47 questions — Divisibility, remainders, HCF and LCM, unit digits, factors.
- Percentages 41 questions — Successive change, percentage points, and turning fractions into percentages fast.
- Profit & Loss 41 questions — Cost, marked and selling price, discounts, and dishonest scales.
- Ratio & Proportion 36 questions — Splitting, scaling, partnerships and variation.
- Averages 36 questions — Weighted means, the effect of adding or removing a member, and deviation tricks.
- Problems on Ages 33 questions — Relations between ages now, before and after — set up once, solve once.
- Time & Work 44 questions — Rates of work, pipes and cisterns, alternating days and efficiency.
- Time, Speed & Distance 49 questions — Trains, boats and streams, relative speed, average speed.
- Simple & Compound Interest 40 questions — Growth over periods, the difference between SI and CI, and doubling times.
- Permutations & Combinations 35 questions — Counting arrangements and selections without listing them.
- Probability 37 questions — Favourable over total, complements, and independent events.
- Mixtures & Alligation 37 questions — Blending prices and concentrations; replacing part of a solution.
- Mensuration 41 questions — Areas, perimeters, volumes and surface areas of the usual shapes.