Question

A Committee of 7 persons is to be formed out of 11. The number of ways of forming such a
committee is​

Answer 1

Answer: There are 330 ways to make a committee of 7 members out of 11 .

Step-by-step explanation:

we have to select 7 members out of 11 :

So , n = 11

and r = 7

Formula of combination is = n!/r!(n-r)!

put the values in formula =>

=11 ! / 7! * (11-7)!

= 11*10*9*8*7! / 7! * 4!

= 11*10*9*8/(4*3*2*1)

= 330

Therefore , there are 330 ways to make a committee of 7 members out of 11  

if you find this helpful : ) mark me as a brain list : ).

Answer 2

Answer:

330

Step-by-step explanation:,

The committee is made from 7 people, so we need to find 11C7  which is ,

11*10*9*8*7*6*5*4*3*2*1 divided by 4*3*2*1*7*6*5*4*3*2*1  which is

11*10*9*8 divided by 4*3*2*1

which is 330

I hope this helped. If you do not know what combinations and permutations are, i recommend you to watch this video.  

https://www.youtube.com/watch?v=iKy-d5_erhI