问一道简单的sat数学题Lauren mixes and matches all of her jeans,shirts,and vests to make different outfits.If she can make a total of 24 outfits,each consisting of one pair of jeans,one shirt,and one vest,which of the following could NOT be t

题目详情

问一道简单的sat数学题
Lauren mixes and matches all of her jeans,shirts,and vests to make different outfits.If she can make a total of 24 outfits,each consisting of one pair of jeans,one shirt,and one vest,which of the following could NOT be the number of shirts that Lauren has?
a.2 b.3.c.4 d.5 e.6
做题步骤是什么?
不要简单的回答5不能被24整除

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答案和解析

因为设三种衣服分别为a、b、c件,能搭配的套数就应该是a*b*c（最基本的排列组合哈）又因为可以搭配出24件 abce四个选项你算一下都可以乘出24 只有5不可以所以不能是D
D错误原因：ab乘出来必然是整数可得一个整数*5=24 这是不可能的

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