Question

What is the probability of not drawing a blue marble?

Answer 1

Answer:

3/4

Step-by-step explanation:

There are 12 marbles.  3 are blue.  The probability of drawing a blue marble is:

P = 3/12 = 1/4

So the probability of NOT drawing a blue marble is:

1 - P = 1 - 1/4 = 3/4