1. Which of the numbers below is NOT a prime
number?
A. 13
B. 37
C. 39
D. 47

C. 39

Step-by-step explanation:

Note:

A prime number is a number that is only divisible by 1 and itself.

13 is only divisible by 1 and itself.

37 is only divisible by 1 and itself.

47 is only divisible by 1 and itself.

But 39 is divisible by 1, 3, 13 and 39.

I hope it helps you. Please choose my answer as the BRAINLIEST.

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step-by-step explanation:

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.