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[Problem Solving]
试题详情
题目：
A photographer will arrange 6 people of 6 different heights for photograph by placing them in two rows of three so that each person in the first row is standing in front of someone in the second row. The heights of the people within each row must increase from left to right, and each person in the second row must be taller than the person standing in front of him or her. How many such arrangements of the 6 people are possible?
选项:
A、5
B、6
C、9
D、24
E、36
答案:
A
提问：
ps
解答：
点赞0
阅读5491
提问：
这题是发的数学书上，怎么做？
请看附加照片
解答：
点赞-1
阅读5600
提问：
这种题目能在两分钟内做出来?
解答：
点赞0
阅读5614
提问：
想请问老师 这道题除了枚举法还有什么方法可以做吗
这道题我用的枚举法做对了但感觉枚举法浪费时间 而且万一考试的时候更多数据不就列不过来了吗
（之前的答疑录音也是用枚举法）
解答：
点赞1
阅读5567
提问：
A photographer will arrange 6 people of 6 different heights for photograph by placing them in two rows of three so that each person in the first row is standing in front of someone in the second row. The heights of the people within each row must increase from left to right, and each person in the second row must be taller than the person standing in front of him or her. How many such arrangements of the 6 people are possible?
5
6
9
24
36
解答：
点赞0
阅读5593
提问：
这道题我猜的，猜对了居然还，不过还是不太懂。。
解答：
点赞0
阅读5519
提问：
PS-数学
解答：
点赞0
阅读5518
提问：
不懂得怎样分析
解答：
点赞0
阅读5517
提问：
ps
解答：
点赞0
阅读5492
提问：
凑出来有6种，不知道哪里重复了。
请问老师有简便的方法吗？
解答：
点赞0
阅读5528
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