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?

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 bal class=