有15跟火柴,甲乙两人轮流取走,每次只能取1或2根,谁取到最后一根谁嬴。想一想,为了确保获胜,

是先取火柴,还是后取火柴?怎么取?
2024-11-07 06:34:23
推荐回答(5个)
回答(1):

后取者胜。
根据对方取的根数决定你取的根数,如果对方取1根,你就取两根,如果对方取2根,你就取1根,这样每次你取完之后正好是3的倍数递减,所以第15根一定是你的。

回答(2):

后取者获胜。根据对方取得甘肃决定你去的根数,如果对方取一根你就取两根,如果对方取两根你就取一根,这样每次你取完之后正好是三的倍数递减,所以第15根一定是你的。

回答(3):

这问题有毛病吧?一人一根可以取,一人两根也可,那一个一根一个两根也可,一个两根一个一根也行,结果都不一样,应该加一句吧?每次必须限取三根吧?

回答(4):

如果甲乙两人各取一次算一个回合,所以后取的人能保证这一回合两人的总根数是3根,
15÷3=5,所以后取获胜。

回答(5):

要按照对方取得根数来算.

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