Graduate Management Admission Test (GMAT) Practice Test

What is the result of adding two odd numbers together?

1. Odd

2. Even

3. Positive

4. Zero

The correct answer is: Even

When two odd numbers are added together, the result is always an even number. This occurs because odd numbers can be represented in the form "2n + 1," where "n" is an integer. For example, if we take two odd numbers, say 3 and 5, they can be expressed as: 3 = 2(1) + 1 and 5 = 2(2) + 1. When you add them: 3 + 5 = (2(1) + 1) + (2(2) + 1) = 2(1 + 2) + 2 = 2(3) + 2. This can be rewritten as 2(3 + 1), which is indeed an even number. Therefore, the sum of any two odd numbers will always be even, confirming that the correct answer is that the result is even.