Bri_Durbin
Can someone help me? (medal)



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Bri_Durbin
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1 and 2 please

waterineyes
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\[\huge ^nP_r = \frac{n!}{(nr)!}\]
\[\huge ^nC_r = \frac{n!}{(nr)! \cdot r!}\]

Bri_Durbin
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um i need the answer lol