Question

simplify 10p8

Answer 1

Use the fact multiplication is associative, so you get 80p

Answer 2

now you're going to use this formula

n P r = (n!)/(n-r)!

Answer 3

in this case, n = 10 and r = 8

Answer 4

How do you know she is talking about permutations

Answer 5

because I remember a previous problem was dealing with combinations

Answer 6

I can see how you got 80p though, that's probably just one of the unfortunate things about math: the notation can get ambiguous and confusing

Answer 7

lol

Answer 8

@jim_thompson5910 is right