英文的排列组合问题！！！！！！！ 求解啊！！！！
英文的排列组合问题！！！！！！！ 求解啊！！！！
A group of 12 friends goes to a cinema complex that is showing 6 different movies. If the group splits up into subgroups based on movie preferences, how many subgroup combinations are possible?
A group of 12 friends goes to a cinema complex that is showing 6 different movies. If the group splits up into subgroups based on movie preferences, how many subgroup combinations are possible?
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排列组合的问题为啥平均分租时候要除以 组数的阶乘 !求解释谢谢啦
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你能帮帮他们吗