Which of the following is a prime number?

Which of the following is a prime number?

• A. 4
• B. 6
• C. 7
• D. 10

Answer: (C)

A prime number is defined as a natural number greater than 1 that has no positive divisors other than 1 and itself. In this case, 7 is the only number listed that meets this criterion. The number 7 is greater than 1 and can only be divided evenly by 1 and 7. It cannot be divided evenly by any other whole numbers, confirming its status as a prime number. On the other hand, the numbers 4, 6, and 10 are not prime. The number 4 can be divided by 1, 2, and 4; 6 can be divided by 1, 2, 3, and 6; and 10 can be divided by 1, 2, 5, and 10. Each of these numbers has divisors other than 1 and themselves, which disqualifies them from being prime. Therefore, the only prime number in this list is 7.

A prime number is defined as a natural number greater than 1 that has no positive divisors other than 1 and itself. In this case, 7 is the only number listed that meets this criterion.

The number 7 is greater than 1 and can only be divided evenly by 1 and 7. It cannot be divided evenly by any other whole numbers, confirming its status as a prime number.

On the other hand, the numbers 4, 6, and 10 are not prime. The number 4 can be divided by 1, 2, and 4; 6 can be divided by 1, 2, 3, and 6; and 10 can be divided by 1, 2, 5, and 10. Each of these numbers has divisors other than 1 and themselves, which disqualifies them from being prime. Therefore, the only prime number in this list is 7.