Tell which number is prime: 19, 28, 49, 63. A.63*** B.49 C.28 D.19

Any number ending in 2 is an even number and it will be divisible by 2, therefore it is not prime. Try 3. Take the number, and add the digits up, when those digits are divisible by 3, the number is not prime. Which one is left?

i dont get it.

wait sothe answer is 49

WHAT IS THE ANSWER

the answer is 9

does anyone know the answer???????

28

is 19!

The answer is 19

19

( ͡° ͜ʖ ͡°)

here is a tip
The 30 prime numbers are. 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101. 103. 107, 109, 113, 117 and their sum is 230.

It's 19

answer is 19