Question

Heather has a bag containing 4 marbles: 1 red, 1 blue, and 2 green. she draws 1 marble out of the bag, replaces it, and then draws another marble. what is p(red then blue then green)?

Answer 1

Multiply the probability of each by each other:

Probability of red = 1/4

Probability of blue = 1/4

Probability of green = 2/4 = 1/2

probability of red then blue then green = 1/4 x 1/4 x 1/2 = 1/32

answer: 1/32