Question

4. Which of the following is not a prime number? A. 19 B. 11 C. 5 D. 24

Answer 1

THE ANSWER IS D...the prime numbers between 1 to 30 is 2,3,5,7,11,13,17,19,23,29

Answer 2

D. 24

Explanation:

A prime number is a number that only has 2 factors, which is 1 and itself. In other words, a prime number is only divisible by 1 and itself.

19 is a prime number, because it is only divisible by 1 and itself.

11 is also a prime number because it is only divisible by 1 and itself.

5 is also a prime number because it is only divisible by 1 and itself.

24 is not a prime number because it is divisible by 1 and itself, but it is also divisible by 2, 3, 4, 6, 8, and 12.

The answer is D.