A comedian has rehearsed 10 different jokes. During a given act, he performs any 5 of these jokes. How many different acts can he perform assuming the order of the jokes in an act is not important?
单选题
2022-01-12 11:39
A、10
B、252
C、42
D、84
E、126
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正确答案
B
试题解析
The order that he performs the jokes does not matter in this problem. Set up a combination for10 choose 5 jokes..