Graduate Management Admission Test (GMAT) Practice Test

What type of integer is zero classified as?

1. Odd

2. Prime

3. Even

4. Negative

The correct answer is: Even

Zero is classified as an even integer because it can be expressed in the form of 2n, where n is an integer. Specifically, if you take n = 0, you find that 2 * 0 = 0. This fits the definition of even integers, which are integers that are divisible by 2 without leaving a remainder. Additionally, zero does not meet the criteria for being classified as odd, prime, or negative. Odd integers are those that leave a remainder of 1 when divided by 2, and prime numbers are defined as having exactly two distinct positive divisors: 1 and the number itself. Since zero has an infinite number of divisors, it cannot be prime. Lastly, negative integers are those that are less than zero, whereas zero itself is neither positive nor negative. Thus, the classification of zero as an even integer is the most accurate and appropriate.