SOLUTION: A drama teacher is randomly choosing students for r different roles in a play. There are 8 students from which to choose and the numver of possible outcomes is 56. How many roles r

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Question 582636: A drama teacher is randomly choosing students for r different roles in a play. There are 8 students from which to choose and the numver of possible outcomes is 56. How many roles r are in the play?
Found 2 solutions by stanbon, richwmiller:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A drama teacher is randomly choosing students for r different roles in a play. There are 8 students from which to choose and the numver of possible outcomes is 56. How many roles r are in the play?
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8Cr = 56
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r = 3
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Cheers,
Stan H.
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Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
2 roles
8*7=56