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Carp Diem

机译：及时行乐

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摘要

One hundred children had a chance to win 1 to 4 fish at a school carnival. By the end of the day, 77 won goldfish, 83 won angelfish, 56 won zebra fish, and 85 won carp. All 100 children were eligible for each drawing, and each won at least 1 fish. How many students won all 4 kinds of fish? Keep in mind that this number is the least number of students who won all 4 fish for certain. 2. Some of the children have an aquarium to keep the fish they've won. They want to fill the aquarium with 5 gallons of water. The students have 2 cylindrical buckets. One is a 4-gallon bucket and the other is a 2-gallon bucket. Is it possible for the children to pour exacdy 5 gallons of water into the aquarium using these 2 buckets alone?
机译：一百名儿童有机会在学校狂欢节上赢得1-4条鱼。当天结束时，金鱼77头，神仙鱼83头，斑马鱼56头，鲤鱼85头。所有100名儿童都有资格参加每幅绘画，并且每人至少赢得1条鱼。有多少学生赢得了全部4种鱼？请记住，这个数字是肯定赢得所有4条鱼的最少的学生数量。 2.有些孩子有一个水族馆来饲养他们赢得的鱼。他们想用5加仑的水填充水族馆。学生有2个圆柱桶。一个是4加仑的水桶，另一个是2加仑的水桶。孩子们可能仅使用这两个桶就将5加仑的水倒入水族馆吗？

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