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OpenStudy (anonymous):
a small airplane has 62 seats for a flight with 31 passengers in approximately how many different ways can the airlines assign the seats
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OpenStudy (anonymous):
Assuming that order doesn't matter, the number of arrangements would be \[_{62}C_{31}=\frac{62!}{31!(62-31)!}\] http://www.wolframalpha.com/input/?i=62+choose+31
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