Answer: 5/12.
- A 5/12
- B 1/3
- C 1/2
- D 7/18
Correct answer: A. 5/12
Explanation: Prime sums 2, 3, 5, 7, 11 occur in 1 + 2 + 4 + 6 + 2 = 15 ways, giving 15/36 = 5/12.
Concept context
Random experiments, sample space, events, and the axiomatic approach to probability