Homework Answers
Number of ways to select r items from n, nCr = n!/(r! x (n-r)!)
P(the customer selects 3 slices that are the same) = (Number of ways to select 3 cheese slices from 5 + Number of ways to select 3 supreme slices from 7) / Number of ways to select any 3 from 12
= (5C3 + 7C3) / 12C3
= (10 + 35) / 220
= 0.2045
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what is the probability that the customer selects 3 slices
that are the same
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Step 1 of 2:
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Step 2 of 2:
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