Question

Evaluate the permutation P(36,19)=____

Answer 1

easy

nPr=
`(n!)/((n-r)!)`
here
36P19=
`(36!)/((36-19)!)=`

`(36!)/((17)!)=`

`(36*35*34*33*32*31*30*29*28*27*26*25*24*23*22*21*20*19*18)/(1)=`
1045843337171591729971200000