Question 1200790
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There are three jersey colors for each of the seven hat colors, for a total of 21 choices for hats and jerseys. For each of those 21 choices, there are two pants color choices.  And so on... 

																
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
*[illustration darwinfish.jpg]

From <https://www.algebra.com/cgi-bin/upload-illustration.mpl> 
I > Ø
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{{n}\choose{r}}
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