A bag contains 4 blue marbles, 6 green marbles, and 2 red marbles. You select one green marble from the full bag. What is the probability that the next marble you select will be blue?
Well there are 12 marbles in total. If you select one green marble, you have 11 marbles in total. There are 4 blue marbles. So you have a 4/11 chance of selecting a blue marble or 36% probability of getting a blue marble.
