Probability Question

Question

Suppose a jar contains 12 red marbles and 36 blue marbles. If 2 marbles are randomly chosen from the jar at the same time, find the probability that both marbles are red. Round your answer to four decimal places

Answer 1

There are a total of 48 marbles in the jar, 12 red plus 36 blue.

This would be (12/48) * (11/47) = (1/4) * (11/47) = 11/188 = 0.0585, rounded to 4 decimal places.