Interview prep kit

Short lessons with worked examples, and a 10-question quiz for each topic. Everything is free, needs no sign-up, and your scores stay on your own device.

Aptitude

Most campus placement tests start with an aptitude round. Learn the method for each topic, then test yourself. Every answer comes with a reason, so a wrong answer teaches you something.

Percentages

Percentage basics, percentage change, successive changes and the shortcuts used in placement aptitude tests, with worked examples and a 10-question quiz.

4 min lesson · 10 questions

Profit and Loss

Cost price, selling price, marked price, discount and profit percentage explained with formulas, worked examples and a 10-question practice quiz.

3 min lesson · 10 questions

Time and Work

Work rates, combined work, pipes and cisterns, and the LCM method for time and work questions, with worked examples and a 10-question practice quiz.

4 min lesson · 10 questions

Ratio and Proportion

Ratios, proportions, dividing a quantity in a ratio, mixtures and age problems explained with examples and a 10-question practice quiz.

4 min lesson · 10 questions

Averages

How to find an average, combine groups, handle added and replaced values and use shortcuts for consecutive numbers, with worked examples and a 10-question quiz.

4 min lesson · 10 questions

Simple and Compound Interest

Formulas and worked examples for simple interest, compound interest, half-yearly compounding and the CI-SI difference, with a 10-question practice quiz.

4 min lesson · 10 questions

Speed, Time and Distance

Speed formulas, unit conversion, average speed, relative speed, trains and boats-and-streams problems with worked examples and a 10-question quiz.

4 min lesson · 10 questions

Number Series

How to find the pattern in a number series: differences, ratios, squares and cubes, alternating and Fibonacci-type series, with worked examples and a 10-question quiz.

4 min lesson · 10 questions

Coming next

Verbal and communication: grammar, sentence correction, email writing and speaking practice.

Coding: concepts, "predict the output" questions and common interview problems with explained solutions.

Preparing for interviews as well? Read our HR interview questions for freshers and the interview preparation checklist.