Question

if you choose a committee of 4 people from a group of 8, how many different committees are possible?

Answer 1

does choice order matter?

Answer 2

8 things...how many groups of 4 can we make.
a straightforward combinations problem.
Do you know the combinations formula to use?

Answer 3

no I don't bang

Answer 4

No order doesn't matter. Math teachers always use "committees" as examples of groups where order doesn't matter. We just care about the number of different commitees

Answer 5

they give choices though

Answer 6

a 100 b 32 c 64 d 70

Answer 7

C(n,r) refers to n total things...how many groups of size r can be selected

Answer 8

would it be 70?

Answer 9

yes. that's what i get.

Answer 10

8x7x6x5=1680; 4x3x2x1=24....1680/24=70

Answer 11

yep. easiest with a calculator that does factorials, of course.

Answer 12

yup...thanks