【GMAT考满分数学PS题库】Now we have to choose 4 teams from 6 teams to go t_真题_答案_解析 GMAT考满分官网

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题目内容

Now we have to choose 4 teams from 6 teams to go to the game, then how many different selection methods are there?

A360
B120
C60
D30
E15

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正确答案: E

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