We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
1080
1
avatar

1. Find the value of 5 Permutations of set with 9 elements

2.In how many ways can set of five letters be selected from the english alphabet

WITH SOLUTION .... THANKS

 Mar 2, 2015

Best Answer 

 #1
avatar+17774 
+5

1)  Permutation of 9 items, 5 at a time:  9P5  =  9! / 4!  =  9x8x7x6x 5  =  15120.

2)  If order is important:  26P5          (If you want just a set, order isn't important.)

     If order is not important:  26C5

 Mar 2, 2015
 #1
avatar+17774 
+5
Best Answer

1)  Permutation of 9 items, 5 at a time:  9P5  =  9! / 4!  =  9x8x7x6x 5  =  15120.

2)  If order is important:  26P5          (If you want just a set, order isn't important.)

     If order is not important:  26C5

geno3141 Mar 2, 2015

9 Online Users