there are 8 students auditioning for a play and there are 56 possible outcomes. How many roles are there?

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asked by Susan
  1. I am trying to help my son and I understand the question -just not sure how to get there as I am not understanding probabilities and combinations which I believe this is.

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    posted by Susan
  2. There are 8 ways to choose the first role, leaving 7 ways to choose the 2nd role, 6 ways for the 3rd, etc.

    8*7 = 56, so we must have just two roles.

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    posted by Steve

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