Exercise 10 Page P19

Recall that the probability of an event is the ratio of favorable outcomes to possible outcomes. Probability=favorable outcomes/possible outcomesIn this exercise, we have a bag containing 19 marbles: 8 blue, 6 red, and 5 green. This means the number of possible outcomes for the first two marbles drawn is 19.

We are given that the first two marbles drawn are returned to the bag before drawing the next marble. This means the number of possible outcomes for the third marble remains 19. Since we want the third marble to be green, the number of favorable outcomes is 5. 5/19 l← ← lgreen marbles total marbles