Integers and real numbers
Last updated: 1 Feb 2007
In the GMAT you will be expected to know the following sets of numbers.
- Integers
- The integers are the all the numbers in the set { ..., -3, -2, -1, 0, 1, 2, 3, ... }.
- So no fractions or numbers with a decimal point.
- Real numbers
- The real numbers include all integers, e.g. 3, 1235 and -6, and all the numbers between the integers e.g. -3.5, 3/4 and `pi`.
- You should assume that answers in the GMAT are real numbers unless you are told otherwise.
You may also have heard of the natural, counting, whole, rational, irrational and imaginary numbers however you will be pleased to find out that knowledge of these sets of numbers is not tested in the GMAT and therefore you have no need to revise them.
Contents
- Introduction
- Integers and real numbers
- Positive and negative numbers
- Odd and even numbers
- Prime numbers
- Factoring numbers
- Divisibility tests
- Summary of properties of numbers
Practice questions
