A pair of fair 6 -sided dice is rolled n times. What is the least value of n such that the probability that the sum of the numbers face up on a roll equals 7 at least once is greater than \dfrac{1}{2} ?
Answer Choices
A. 2
B. 3
C. 4
D. 5
E. 6
A pair of fair 6 -sided dice is rolled n times. What is the least value of n such that the probability that the sum of the numbers face up on a roll equals 7 at least once is greater than \dfrac{1}{2} ?
Answer Choices
A. 2
B. 3
C. 4
D. 5
E. 6