An urn contains 2 red and 3 blue marbles. Two marbles are selected at random, one after the other and without replacement, from the urn. Calculate the probability that both marbles are blue.
0.24
0.86
0.14
0.3
The probability of selecting a blue marble on the first draw is 3/5.
After removing one blue marble from the urn, there are 4 marbles left, 2 of which are blue.
Therefore, the probability of selecting a blue marble on the second draw is 2/4 (since one blue marble has already been removed).
Multiplying the probabilities gives:
(3/5) * (2/4) = 6/20 = 0.3
Therefore, the probability that both marbles are blue is 0.3.