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OpenStudy (anonymous):
evaluate 6. 6P4 7. 5(3P2) 8. 5C2 + 5C1 i need help with this
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OpenStudy (anonymous):
npr = n! / (n-r)!
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
Welcome
OpenStudy (anonymous):
and \[nCr=\dfrac{n!}{(n-r)!r!}\]
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