You roll a red die and a green die. What is the size of the sample space of all possible outcomes of rolling these two dice, given that the red die shows a prime number?

A. 9
B. 6
C. 12
D. 24
E. 18

Question

You roll a red die and a green die. What is the size of the sample space of all possible outcomes of rolling these two dice, given that the red die shows a prime number?
 		
   A.	9
 		B.	6
 		C.	12
 		D.	24
 		E.	18

anonymous · Answer

For every prime on the red dice the green dice can have any value (6 different values)
Therefore the space is:
(#number of primes on red dice) * 6
Can you figure the rest out?

anonymous · Answer

prime numbers are 1 and its self right?

anonymous · Answer

so 18

anonymous · Answer

2,3,5
times 6, yeah

anonymous · Answer

if 1 were a prime it would be 24

anonymous · Answer

agreed, thank you @phanta_seea and @BenjaminEE