Mathematics for IGCSE & O level - Probability (Section 7 - No. 46)
Two dice are rolled. What is the probability the sum of the numbers is 7?
1/6
1/12
5/36
1/36
説明
There are 6 possible combinations that result in a sum of 7: (1,6), (2,5), (3,4), (4,3), (5,2), and (6,1). There are a total of 36 possible outcomes (6 sides * 6 sides). Therefore, the probability is 6/36 = 1/6.