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[Problem Solving]

试题详情

题目:

Rita and Sam play the following game with n sticks on a table. Each must remove 1, 2, 3, 4 or 5 sticks at a time on alternate turns, and no stick that is removed is put back on the table. The one who removes the last stick (or sticks) from the table wins. If Rita goes first, which of the following is a value of n such that Sam can always win no matter how Rita plays?

选项:

A、7
B、10
C、11
D、12
E、16

答案:

D

提问:

请May老师解答一下,谢谢

解答:

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阅读1422
解答: 徐小梅

提问:

请May老师解答一下,谢谢

解答:

点赞0
阅读1423
解答: 徐小梅老师

提问:

看到这个题没有任何思路...老师可以讲一下思路吗?感觉跟余数有关

解答:

点赞4
阅读2232
解答: 徐小梅老师

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