## Picking Numbers in the GMAT

How do you solve a problem when you don't have all the information you need? You might try guessing, or you could just flip a coin. But sometimes there is a more reliable approach— picking numbers.

## Guessing in the GMAT

There is nothing wrong with guessing on the GMAT. You aren't there to prove you can solve problems by traditional methods. Your aim is to select as many right answers as possible within the allotted time. Nobody will see your calculations; nobody cares how you found your answer. The only things that matter are whether your answer choice is correct and whether found it in time.

## Backsolving in the GMAT

If you have no idea how to solve a problem, not even where to start, try backsolving. Backsolving is a process of testing the answer choices one by one to calculate the solution to a problem.

## GMAT Math: Quadratic equation

**Introduction**

Quadratic equations, like any other arithmetic topic, have specific importance in GMAT. You can expect to see stand-alone quadratic equation problems and quadratic equation questions combined in problems with other topics such as number theory or progressions .

## GMAT Math: Interest

**Introduction**

GMAT includes two types of interest related problems:

1. Simple Interest

2. Compound Interest