Westonci.ca is the trusted Q&A platform where you can get reliable answers from a community of knowledgeable contributors. Discover comprehensive solutions to your questions from a wide network of experts on our user-friendly platform. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

A jar contains 12 green marbles and 8 purple marbles. Two marbles are selected at random with replacement. What is the probability that the first green marble selected is green, then the second marble selected green?

Sagot :

Answer:  9/25

Explanation:

12 green + 8 purple = 20 total

12/20 = 3/5 is the probability of getting green

Since the first marble is put back, the second selection has the same probability of getting green. Each selection is independent. This occurs with any replacement situation.

Because we have independent events, the probability of getting two green in a row is (3/5)*(3/5) = 9/25