What is the evaluation of 8p5=?

1 Answer
Nam D.
Mar 16, 2018

#6720#

Explanation:

Given: #""^8P_5#

Know that, #""^ba_c# is equal to:

#(b!)/((b-c)!)#

So, we have: #""^8P_5=(8!)/((8-5)!)#

#=(8!)/(3!)#

#=(8*7*6*5*4*color(red)cancelcolor(black)(3!))/(color(red)cancelcolor(black)(3!))#

#=8*7*6*5*4#

#=6720#

This was taken from: https://socratic.org/questions/how-do-you-evaluate-8p5

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