A bag of marbles contains 2 red​ marbles, 1 blue​ marble, and 1 green marble. If two marbles are selected with​ replacement, what is the probability that a red marble and a blue marble are​ selected?

Answer 1

P(red,blue) = (1/2)*(1/4) = 1/8 and P(blue,red) = (1/4)*(1/2) = 1/8

Total probability = 1/4