Question

nPk= the permutations of n taken k at a time. Which of the following is equal to 8P3?
a)8!/5!
b) 8!
c) 3!
d) 8!/3!

Answer 1

a

Answer 2

sorry d

Answer 3

*It is supposed to be:

Answer 4

a

Answer 5

use it http://en.wikipedia.org/wiki/Permutation

Answer 6

my computer is messing up and I can't use any of the equations.. nPk is supposed to be expressed similar to a logarithm where n and k are numbers expressed lower than P. Same for 8P3. I forget what the values are called though. If this makes any sence..
So would it still be a?

Answer 7

yes...

Answer 8

Thank you. What is it called when a number is expressed lower like that?

Answer 9

factorial....

Answer 10

Idk if that's the word I'm looking for. But thanks.