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OpenStudy (anonymous):
Which of the following expressions would give the number of 5 person committees that could be formed from a group of 20 people? P(20, 5) C(5, 20) C(20, 5)
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OpenStudy (amistre64):
well, 20 Pick 5 counts all the number of permuations 20 Choose 5 relates more to elements of a set, and disregards the order as important
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