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Mathematics 19 Online
OpenStudy (anonymous):

9 students volunteer for a committee.how many different 7-persons committees can be chosen

OpenStudy (anonymous):

Does this notation look familiar to you? \[\left(\begin{matrix}9 \\ 7\end{matrix}\right)\]

OpenStudy (anonymous):

It's pronounced "9 choose 7"--it's notation for "Combinations"

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