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 yellow)?

Answer 1

8/10 as it is the 1-P(Yellow)

Answer 2

There are 16 marbles that are not yellow out of 20 total marbles so:

P(not yellow)=16/20=4/5  (80%)