An urn contains 2 red and 3 blue marbles. Two marbles are selected at random, one after the other and with replacement, from the urn. Calculate the probability that both marbles are blue.


0.4


0.8


0.6


0.36

1 answer

0.36

There are a total of 5 marbles in the urn, with 3 of them being blue.

The probability of selecting a blue marble on the first draw is 3/5.

Since we are replacing the first marble and then selecting a second marble, the probability of selecting a blue marble on the second draw is also 3/5.

Therefore, the probability of selecting two blue marbles with replacement is (3/5) * (3/5) = 9/25 = 0.36.