Question

how many 4 person committees can be chosen from a group of 12 people?

Answer 1

Use the equation of nCr=n!/r!(n-r)!
so 12C4=

Answer 2

thanks..but i needed help with the work.

Answer 3

Okay so 12C4= 12!/4!(12-4)!
Then, 12C4 = 12!/4!(8!)
so 12C4 = 12*11*10*9/4! Because the 8! cancels out.

Answer 4

thank you soo much

Answer 5

Does that all make sense?

Answer 6

yes it does. :)