In a shipment of alarm clocks, the probability that one alarm clock is defective is 0.04. Charlie selects three alarm clocks at random. If he puts each clock back with the rest of the shipment before selecting the next one, what is the probability that all three alarm clocks are defective?

Answer 1

prob all three defective
= (.04)^3 = .000064

My question to you:
What would it be if he had not returned the clocks after checking them?

Answer 2

im not sure