In a bag are three black marbles and three blue marbles. If two marbles are drawn from the bag at the same time, what is the probability that both marbles will be blue?
Thank you so much
Total possibilities from choosing 2 marbles from 6 = C(6,2) = 15 (1)
Total possibilities of choosing 2 blue marbles from 3 = C(3,2) = 3 (2)
So.....probability = (2) / (1) = 3 / 15 = 1/ 5 = .2 = 20%
+299 
