Question

I am a prime number. I am greater than 50, but less than 80. When you add my digits together you get 16. What number am I?

Answer 1

79

Explanation:

when you add 7+9 you get 16 and 79 cant be divided evenly from any number making it prime

Answer 2

79

Explanation:

7 + 9 = 16

the number 79 is divisible only by 1 and the number itself. since 79 has exactly two factors, i.e. 1 and 79, it is a prime number.