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Mathematics 24 Online
OpenStudy (anonymous):

What is the value of 9P5? A. 45 B. 126 C. 15,120 D. 59,049

OpenStudy (paki):

you know the formula of permutation...?

OpenStudy (anonymous):

@dan815

OpenStudy (anonymous):

yes

OpenStudy (paki):

ok... then put n=9 and r=5 in that... and tell what you got...?

OpenStudy (dan815):

-_- dude are u learning this stuff

OpenStudy (dan815):

9 Pick 5

OpenStudy (paki):

9! / (9 - 5)! = ?????????

OpenStudy (dan815):

say you got 5 places for a number and 9 different numbers to pick from for each place, where the numbers cant be repeated

OpenStudy (paki):

@ikatouni please respond...

OpenStudy (anonymous):

This will help. :) http://openstudy.com/study#/updates/52f4466fe4b043c0f35706bb

OpenStudy (anonymous):

Thanks for the medal! :)

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