Question

Which answer choice is a composite number? A) 17 B) 21 C) 29 D) 31

Answer 1

A composite number is a positive integer which is not prime ; it has factors other than 1 and itself

A) 17 - prime

B) 21 - composite because factors of 21 = 1, 3 , 7 , 21

C) 29 - prime

D) 31 - prime

Answer

B) 21

Answer 2

the answer thats a composite number is b) 21.