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概率与实际生活有密切的联系,是近年来高考命题的热点内容,主要考查等可能性事件的概率、互斥事件有一个发生的概率,相互独立事件同时发生的概率,某事件在n次独立重复试验中恰好发生k次的概率.一等可能性事件的概率例1(2005年高考广东卷)先后抛掷两枚均为正方体骰子(它们的六个面分别标有点数1、2、3、4、5、6)骰子朝上的面的点数分别为x,y,则log2xy=1的概率为
Probability has a close relationship with real life. It is a hot topic of the college entrance examination proposition in recent years. It mainly examines the probability of possible events, the probability of mutual exclusion events having a probability of occurrence, and the probability of mutual independent events occurring simultaneously. An event is independent of n times. The probability of occurrence of k occurrences in repeated experiments. The probability of the first-possible event Example 1 (the 2005 Guangdong University Entrance Examination) has thrown two pieces of the square cubes (their six surfaces are marked with 1, 2, 3, respectively). 4, 5, and 6) The number of points on the face of the dice facing upward is x, y, and the probability of log2xy=1 is