Question

A bag contains 9 marbles: 3 are green, 4 are red, and 2 are blue. Tammy chooses a marble at random, and without putting

it back, chooses another one at random. What is the probability that the first marble is blue and the second is green? Write
your answer as a fraction in simplest form.

Answer 1

1/12

Explanation:

9 total marbles

probability that the first marble is blue

p = 2/9

the second is green

p = 3/8

prob of both

p = 2/9 * 3/8

p = 6/72

p = 1/12