英语翻译A five-legged Martian has a drawer full of socks,each of which is red,white,or blue,and there are at least five socks of each color.The Martian pulls out one sock at a time without looking.How many socks must the Martian remove from the d
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英语翻译A five-legged Martian has a drawer full of socks,each of which is red,white,or blue,and there are at least five socks of each color.The Martian pulls out one sock at a time without looking.How many socks must the Martian remove from the d
英语翻译
A five-legged Martian has a drawer full of socks,each of which is red,white,or blue,and there are at least five socks of each color.The Martian pulls out one sock at a time without looking.How many socks must the Martian remove from the drawer to be certain there will be 5 socks of the same color?
英语翻译A five-legged Martian has a drawer full of socks,each of which is red,white,or blue,and there are at least five socks of each color.The Martian pulls out one sock at a time without looking.How many socks must the Martian remove from the d
一个五条腿的火星人有一个塞满袜子的抽屉,有红袜子,白袜子和蓝袜子.而且每种颜色的袜子至少都有5条.火星人一次只能从抽屉里拿出一个袜子,并且不能偷看.那么火星人要拿多少个袜子才可以保证手中有五条袜子是同种颜色呢!