Question

There are 8 marbles in a bag, each with a different color. How many different groups

of 4 marbles can we select?

Answer 1

4/8 simplified=1/2

Explanation:

i hope this is right sorry if not

Answer 2

70

Explanation:

8 choose 4

= (8!)/(4!*4!)

=(8*7*6*5)/(4*3*2*1)

=1680/24

=70