Question

A marble is drawn at random from the bag shown below. The bag contains 3 green, 4 yellow, 5 blue, and 8 pink marbles.What is P(not green)?

Answer 1

3+4+5+8 = total amount

P(not green) = (total - 3)/total

Answer 2

or simply:

P(not green) = 1 - (3/total)