+0  
 
0
390
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

Guest Mar 2, 2015

Best Answer 

 #1
avatar+17711 
+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

geno3141  Mar 2, 2015
Sort: 

1+0 Answers

 #1
avatar+17711 
+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

6 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details