Question

in how many ways can a set of 3 or more people be selected from 9 people

Answer 1

\(\frac{n!}{r!(n-r)!}\) where n in=s the size of group, and r is how many you want to pic from the group.

Answer 2

so there are 84 ways, is what I get

Answer 3

choose 3 ->84
choose 4 ->126
choose 5 ->126
choose 6 ->84
choose 7 ->36
choose 8 -> 9
choose 9 -> 1
added up = 466