Graduate Management Admission Test (GMAT) Practice Test

A number divisible by 2 is also divisible by which of the following?

1. Only itself

2. 3

3. 1

4. Any odd number

The correct answer is: 1

A number that is divisible by 2 is defined as an even number, meaning it can be expressed in the form of 2n, where n is an integer. All integers have 1 as a divisor, since any number can be divided by 1 without any remainder. This means that every even number, like any other integer, is indeed divisible by 1. Divisibility by 1 holds true for all integers, regardless of whether they are even or odd. Therefore, the correct choice emphasizes this fundamental principle of divisibility. Other options do not universally apply to all numbers that are divisible by 2. For instance, although an even number is identical to itself, it doesn't imply that the only number it is divisible by is itself, as it is also divisible by other integers, including 1. Consequently, while all even numbers are divisible by 3, this isn't a characteristic shared by all even numbers since even numbers can consist of integers such as 2, which isn't divisible by 3. Lastly, an even number would not be divisible by any odd number except for 1, since odd numbers can only divide itself without remainder if the entire number is odd. Thus, the correct answer demonstrates a universal truth regarding