Kemal G. answered • 05/08/17
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C(9, 6) = 9! / (6!(9-6)!)
= 84
Mariana P.
asked • 05/08/17a group of 9 people are invited to play a trivia game. six are selected for the first round. in how many ways could the first group be selected?
a group of 9 people are invited to play a trivia game. six are selected for the first round. in how many ways could the first group be selected?
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