The two problems I need help with are:


1.) Evaluate   _[8]C_[4]

2.) Evaluate   _[7]P_[4]


The numbers are both subscripts and I can't remember what to do. Thank you for helping!

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1 Answer

1) (8×7×6×5)/(1×2×3×4)=70

2) 7×6×5×4=840

by Top Rated User (775k points)

I had a more descriptive solution, but a system error prevented me from showing it.

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