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Mathematics 12 Online
OpenStudy (anonymous):

9 students volunteer for a committee. How many different 7-person committees can be chosen? 362,880 181,440 36 1

OpenStudy (anonymous):

You have 7 slots to fill __*__*__*__*__*__*__ (Multiply between each) The first slot there are 9 people to choose from 9*__*__*__*__*__*__ The second slot there are now 8 people remaining 9*8*__*__*__*__*__ Continue and solve

OpenStudy (welshfella):

9C7 = 9C2 = 9*8 --- 2*1

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