You roll a 6-sided die. What is P(prime)? Write your answer as a percentage. P(prime) = %

Question

This is a math question I cant figure out 

Answer 1

There are 6 possible answers; 1, 2, 3, 4, 5 and 6.  They all have probability 1/6.

 

Which of those possible results are prime?

 

Decide how many are prime and multiply that by 1/6.