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3 jj 快讯
Will take test 13 hours later, a little bit rush, anyone can comfirm the following Q?
99.4过bread,m个学生分,m>4,3个bread可在m个学生中平分,可无人愿吃一个bread,所以4个bread来分,问K这个人分到的一片,占总bread的几分之几?用m表示.
[讨论]m应该是3的倍数且>4,则m可取6.9.12.15....但又得是4的倍数,则取12
是这意思吗?
This should have a final answer, because it has extemely high repeated rate.
67、还有那道abcd都为质数,问除了1和自己,有多少个不同的因子。
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answer: 16
I think (1+1)*(1+1)*(1+1)*(1+) = 2^4=16, but 除了1和自己, should minus 2
my answer is 14.
116.几道新题:1、四幅大小不同的图画要挂在一面墙上,问两幅最大的挨在一块可能性?我选了12
[讨论]……
P3,3 * P2,2=12 |
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