Drawing a red marble, put it back, and then drawing a yellow marble?

Question

Given that a box has 3 blue marbles, 2 red marbles, and 4 yellow marbles, use the probability formulas to answer the following questions.

What is the probability of...

Answer 1

probability = favorable outcomes/total possible outcomes

Total possible outcomes = 3+2+4 = 9 This would apply to both marble picks since you put the marble back after the first draw.

probability of a red marble = 2/9

probability of a yellow marble = 4/9

To find the probability for both P(red) x P(yellow)

(2/9)(4/9) = 8/81