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OpenStudy (anonymous):
MEDAL FOR THE BEST ANSWER!! What is the value of 10C7? A. 720 B. 120 C. 5040 D. 604,800
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OpenStudy (raden):
use the formula : nCr = n!/(r!*(n-r)!)
OpenStudy (anonymous):
\[10C7=10C10-7=10C3=\frac{ 10*9*8 }{3*2*1 }=?\]
OpenStudy (anonymous):
I get thank you for help!!
OpenStudy (anonymous):
yw
OpenStudy (anonymous):
ncr=ncn-r
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