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标题: 一道JJ [打印本页]

作者: daydream    时间: 2002-12-4 01:11     标题: 一道JJ

A sum of money that includes two kinds of coins, 0.25 and 0.05 face value. The total maney is 2.9 dollars. Ask if the number of 0.25 coins is divided by 5, what is the remaining value of money.
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这题越看越糊涂.问的是remaining value of money.答案怎么可能是4 3 2 1 0 呢?
如果"the digit of 5t must be 0 or 5, consequently that of y must be 8 or 3",那
remaining value of money就是: 8*0.05 OR 33*0.05, 没答案呀?
这题到底问什么呀? 请教DX. 谢先.
作者: suse    时间: 2002-12-4 10:54

这是上月JJ,问面值是0.25的钱币的数量除以5的余数,因为0.25员的钱币数量可以是0个.1.2.3.4.5........11个,余数就有5个可能性了,
但上个月问的是0.5的数量除以5的余数。这时余数只能是3.
作者: daydream    时间: 2002-12-4 11:27

谢谢suse, 我明白了.




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