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 the first marble is red and the second is blue.
0.24
0.76
0.7
0.3
The probability that the first marble is red is 2/5, as there are 2 red marbles out of a total of 5 marbles.
After a red marble is drawn, there are now 4 marbles left in the urn, with 2 being red and 2 being blue. So the probability that the second marble is blue is 2/4, as there are 2 blue marbles out of 4 marbles.
Therefore, the probability that the first marble is red and the second is blue is (2/5) * (2/4) = 4/20 = 0.2.
Therefore, the correct answer is not listed.