Help with Combinations!!!!!!
(C(13,4) - (C(7,4)*C(6,4)))/(C(13,4)

Help with Combinations!!!!!!
(C(13,4) - (C(7,4)*C(6,4)))/(C(13,4)

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Do you know the formula for what C(n,k) is?

n!/((n-r)!r!)
n=13
r=4
=715
n=7
r=4
=35
n=6
r=4
=15

n is the pool or what you are choosing from and k is the select or the amount you can take

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