SOLUTION: The number of ways of choosing 4 people from 12 people is the same as choosing 8 people from 12 people. Why are they done in the same number of ways?
Algebra ->
Permutations
-> SOLUTION: The number of ways of choosing 4 people from 12 people is the same as choosing 8 people from 12 people. Why are they done in the same number of ways?
Log On
Question 40315: The number of ways of choosing 4 people from 12 people is the same as choosing 8 people from 12 people. Why are they done in the same number of ways? Answer by Nate(3500) (Show Source):
You can put this solution on YOUR website! Look at the equations using the formula:
C(n,r) = n!/((n - r)!r!)
........................................................................................................
C(12,4) = 12!/((8!)4!)
and
C(12,8) = 12!/((4!)8!)
They are the same.
(