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The faces of a cube are numbered 1, 2, 3, 4, 5, and 6, respectively. Whenever the cube is rolled, each number is equally likely to appear on the top face after the roll. The cube is to be rolled twice. What is the probability that the number appearing on the top face after the second roll will be different from the number appearing on the top face after the first roll?
Give your answer as a fraction.
Give your answer as a fraction.
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· 相关考点
6.4.3 独立事件
6.4.3 独立事件
以上解析由 考满分老师提供。
