Many students have a hard time understanding what makes a difficult question, difficult. They assume that the tougher questions are …

## How to use units digits to avoid calculations

Imagine you would have to solve 130,467 * 367,569. Without a calculator, we are surely entering a world of hurt. …

## Divisibility of 2

We know the divisibility rules of 2, 4 and 8: For 2 – If the last digit of the number …

## Permutation & Combination

First, recall that the probability of x is the number ways x can occur/number of total possible outcomes (or p(x) …

## Strategies For Solving Data Sufficiency

Memorize the Data Sufficiency answer choices The directions and answer choices for Data Sufficiency questions never change. Memorize them so …

## Few Aspects of CAT!

Knowing how to traverse through a paper is an important skill-set in the CAT. This is particularly true of the …

## Third type of Quant Question

We all know that Quant questions are of two types: Problem Solving and Data Sufficiency. But, if we look carefully, …

## Linear Relations

A linear relation is one which, when plotted on a graph, is a straight line. In linear relationships, any given …

## Joint Variation

We use joint variation when a variable varies with (is proportional to) two or more variables. Say, x varies directly …

## Direct and Inverse variation

Variation describes the relation between two or more quantities. e.g. workers and work done, children and noise, entrepreneurs and start …