Asked by Iva

evaluate the expression ₆ P ₀ I am not sure how to do this problem can some one show me how to do this step by step

Answers

Answered by Reiny
By definition
<sub>n</sub>P<sub>r</sub> = n!/(n-r)!

so <sub>6</sub>P<sub>0</sub>
= 6! / (6-0)!
= 6!/6!
= 1

If you have a scientific calculator, look to see if you have a key that looks like <sub>n</sub>P<sub>r</sub>

on mine to do something like <sub>6</sub>P<sub>2</sub>
I would enter the following key strokes

6
2nd <sub>n</sub>P<sub>r</sub>
2
=

to get 30

Notice <sub>6</sub>P<sub>2</sub>
= 6!/4!
= 6x5x4! /4!
= 6x5
= 30
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