Question

Two urns contain white balls and yellow balls. The first urn contains 7 white balls and 7 yellow balls and the second urn contains 3 white balls and 6 yellow balls. A ball is drawn at random from each urn. What is the probability that both balls are white?

Answer 1

To find the probability that both balls are white you will find the probability of getting a while ball from each situation separately and then multiply these probabilities together.

1.  7/14 or 1/2 chance
2.  3/9 or 1/3 change

1/2 x 1/3 = 1/6

You will have a 1 in 6 chance of getting a white ball from both urns.