Question

Xavier has a bag of 20 marbles. 8 are blue, 7 are red, and 5 are green. Xavier pulls out a marble, records what color it is, and puts it back. He then selects another marble and records its color What is the probability of pulling out a blue marble and then a green marble?

Help please

Answer 1

.1

We have 20 marbles.

Probability of blue marble = 8/20 = .4

Since the blue marble is put back, we still have 20 marbles.

Probability of green marble = 5/20 = .25

Multiplying these probabilities:

.4 × .25 = .1