Answer: 5/12.
- A 1/3
- B 7/18
- C 1/2
- D 5/12
Correct answer: D. 5/12
Explanation: Prime sums are 2, 3, 5, 7 and 11, occurring 1 + 2 + 4 + 6 + 2 = 15 times out of 36, so P = 15/36 = 5/12.
Concept context
Random experiments, sample space, events, and the axiomatic approach to probability