Question

3. Write out the prime factor of the following numbers.

a. 15
b. 21
C. 38
d. 42

Answer 1

The prime factors of 15 are: 1,3,5,15

The prime factors of 21 are: 1,3,7,21

The prime factors of 38 are: 1,3,13,39

The prime factor of 42 is : 1,2,3,6,7,14,21,42