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Junior one probability math problem. To solve the problem of ~ speed ing, Xiao Ming and Xiao Hong play a game. The rules of the game are to put five cards with 1.2.3.4.5 written respectively.
Whether the game is fair or not depends on whether the chances of winning the game are equal, that is, whether the probability of winning is equal, or whether the number of situations involved in judging whether the two sides win is equal when the overall situation is clear.

Solution: Solution: Of the five cards, 3 are odd and 2 are even; Take out 2 pieces, *** 10 method; Among them, even number and 4 kinds, odd number and 6 kinds; So the probability of Xiao Ming winning is 0.6, and the probability of Xiao Hong winning is 0.4, so the game is unfair and Xiao Ming wins easily.

Comments: This question examines the judgment of the fairness of the game. To judge the fairness of the game, it is necessary to calculate the probability of each event. If the probability is equal, it is fair, otherwise it is unfair. The knowledge points used are: probability = the ratio of the number of required cases to the total number of cases.