Question

Find the number of permutations of the first 9 letters of the alphabet taking 6 letters at a time.

Answer 1

Is it like
9*8*7*6*5*4 ??? = 60,480

Answer 2

You are correct. You can also use the formula \[\Large P(n,r) = \frac{n!}{(n-r)!}\]

Answer 3

I was hoping to learn it lol

Answer 4

aaaah okay! thank you!

Answer 5

n! = n*(n-1)*...*3*2*1

example:

7! = 7*6*5*4*3*2*1