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OpenStudy (anonymous):
Evaluate ,19C8. A.76183 B.75291 C.75582 D.75063
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Vocaloid (vocaloid):
combination formula nCr = n!/[(n-r)!r!]
OpenStudy (anonymous):
? dont know how to use it
OpenStudy (anonymous):
give medal if any one can give me answer
Vocaloid (vocaloid):
your question is 19C8 so n = 19 and r = 8 just plug it into nCr = n!/[(n-r)!r!]
OpenStudy (anonymous):
oh okay thanks
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