Math CentralQuandaries & Queries


Question from Frank:

How many combinations are there for 22 numbers (1 to 22) of 4 numbers and 5 numbers. For 4 would it be 22 x 22 x 22 x 22 for 4 one more x 22 for 5? Thank You!

Hi Frank,

Your calculations are correct if you allow the same number to appear more than once. For example is

19, 15, 19, 19

an acceptable combination? In mathematics combination is a technical word that doesn't have this meaning but I think it's what you want.


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