An urn contains 24 red, 40 white and 22 blue marbles. A child selects two marbles at random and without replacement from the urn. Find the probability that the colors of the selected marbles are different. Solution probability that the colors of the selected marbles are different.=(24C1*40C1+40C1*22C1+22C1*24C1)/86C2=(960+880+528)/3655=0.6478.

1. An urn contains 24 red, 40 white and 22 blue marbles. A child selects two marbles at random
and without replacement from the urn.
Find the probability that the colors of the selected marbles are different.
Solution
probability that the colors of the selected marbles are
different.=(24C1*40C1+40C1*22C1+22C1*24C1)/86C2=(960+880+528)/3655=0.6478