Question

nPr=3024,then how to calculate the value of r?

Answer 1

Same question asked here http://openstudy.com/updates/50df347fe4b0f2b98c87319f

Answer 2

\[^nP_r=\frac{n!}{(n-r)!}\]

Answer 3

Permutation

Answer 4

first factorise 3024

Answer 5

find the highest prime factor number in the factors
here we are having 3024 = 7*3*3*3 *2*2*2*2
either start from the leading prime factor or form consecutive sequence of the factors obtained

Answer 6

here we are having 3024 = 9*8*7*6

Answer 7

3024 = 9*8*7*6*5! /5!= 9!/(9-4)!

Answer 8

r=4