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OpenStudy (anonymous):
13C9 Srry
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OpenStudy (anonymous):
\[\binom{13}{6} = ~_{13}C_6 = \dfrac{13!}{6!(13-6)!} = \dfrac{13!}{6!(7!)} = \dfrac{13\cdot12\cdot11\cdot10\cdot9\cdot8}{6\cdot5\cdot4\cdot3\cdot2}=~\cdots~?\]
OpenStudy (anonymous):
Well, you get the idea.
OpenStudy (yanasidlinskiy):
\(\Huge\bf \color{green}{Welcome~to~OpenStudy!!}\hspace{-310pt}\color{cyan}{Welcome~to~OpenStudy!!}\hspace{-307.1pt}\color{green}{Welcome~to~\color{green}{Open}}\color{green}{Study!!!!}\) Anymore questions? We'll be more than glad to help you=)
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