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标题: 20 people seated in a circle, [打印本页]

作者: yma16 时间: 2005-8-30 22:16
标题: 20 people seated in a circle,

Remove every 7th person. Who will be left in the end?

I saw this type of questions in either here or WXC. But I cannot find it. Is there a general solution for any n people? If you can find the links, please let me know.

The problem here is from an US 7th grade math book.

作者: husonghu 时间: 2005-8-31 03:08
标题: [:L]There were several topics of this kind .....

in the psat posts. But you may have to be very patient browsing backwards to find them.

作者: husonghu 时间: 2005-8-31 09:40
标题: Sorry, I mean "in the past posts of this forum".

Sorry, I mean "in the past posts of this forum".

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