Question

Cynthia made the conjecture that the sum of any prime number and any composite number is a composite number.

Which equation is a counterexample to her conjecture?

A.
5 + 8 = 13

B.
11 + 9 = 20

C.
13 + 2 = 15

D.
11 + 2 = 13

Answer 1

@lizzyrockefeller

Answer 2

@justuu

Answer 3

pleeeeeeeeeeese help last question!!!!!

Answer 4

i think it would be A

Answer 5

it was not. It is ok but I have to take my test again.

Answer 6

awww im sorry

Answer 7

you were right! I checked I'm not kidding!!!