1.what is the difference between 501 and 489

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1.what is the difference between 501 and 489
2.Harry and Micheal were having a ping pong match in the sports room in the evening.This was an important match because the winner would receive 300RMB.Harry won the first game,Michael won the second and Harry won the third.Suddenly,the lights went out,and they could not go on with the game.
问题是这样的:How much money would each of them get if they didn't continue with the match?Who would get more and who would get less?Why?

1.501-489=12
2.乒乓球是5局3胜制的.所以300元钱平均分到每场就四60元.
现在他们才比了3场,H赢了1/3两场,M赢第2场.因为不能继续比赛,所以他们只能按照现在这个状况把奖金平分.因为还有2场没有举行,所以他们之中谁都有可能赢得最后胜利.因此不能把奖金都给已经赢了2场的H.
为了公平起见,假设这场比赛只有3局.那么赢的人就是H,所以把60X3=180的钱先给H.剩下的120两个人平分.最后结果是H得到240,而M得到60.

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