Question

Which of the values listed is a prime number?

A. 10
B. 15
C. 27
D. 29

Answer 1

29

Explanation:

A prime number is a number that can't be divided by any number other than itself or 1.

10

1*10

2*5

5*2

10*1

NOT A PRIME NUMBER

15

1*15

3*5

5*3

15*1

NOT A PRIME NUMBER

27

1*27

3*9

9*3

27*1

NOT A PRIME NUMBER

29

1*29

29*1

PRIME NUMBER

Answer 2

D. 29

Explanation:

A. 10 = 2 × 5 not prime

B. 15 = 3 × 5 not prime

C. 27 = 3³ not prime

D. 29 = 1 × 29 prime