Question

can someone help me pleez.... in how many ways can a subcommittee of 5 ppl be chosen from a Congressional committee of 18 ppl?

Answer 1

18nCr5 = Answer. I believe.

Answer 2

can u explain a little more plz

Answer 3

Because the order doesn't matter in this problem, that's why we use combination instead of permutation.
The equation for combination is nCr.
N= total amount of people.
R= how many people you actually want.

Answer 4

yes and 18nCr5 is calculated as \[\frac{n!}{r!*(n-r)!}\]

Answer 5

okay i get it. :}