题目信息
In how many different ways can 3 identical green shirts and 3 identical red shirts be distributed among 6 children such that each child receives a shirt?
A:20
B:40
C:216
D:720
E:729
参考答案及共享解析

共享解析来源为网络权威资源、GMAT高分考生等; 如有疑问,欢迎在评论区提问与讨论
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已选答案:
正确答案:
A:20
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题目来源
Magoosh