Question

Tom has a bag of marbles: 4 red and 5

blue. He reaches in the bag and pulls out a
red. He DOES NOT replace the marble. He
reaches in again and pulls out another red
marble. What is the COMPOUND
probability that Tom will pull out a red and
a red? (Show your work calculating the
probability)

Answer 1

2/7

Explanation:

If he pulls out 2 reds that leaves 2 reds left and 5 blue and in total thats 7 marbles