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OpenStudy (anonymous):
A group of 8 friends (5 girls and 3 boys) plans to watch a movie, but they have only 5 tickets. How many different combinations of 5 friends could possibly receive the tickets?
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OpenStudy (anonymous):
Please help
OpenStudy (anonymous):
\[_{nC _{r}}=\frac{ n! }{ (n-r)!r!}\] \[_{nC _{r}}=\frac{ 8! }{ (8-5)!5! }=56\] So there are 56 combinations.
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