Question

An um contains balls numbered 1 through 10. A ball is chosen, returned to the um, and a second ball is chosen. What is the probability that the first and second bails will be a 5?

Answer 1

There is 1 ball numbered 5 out of a total of 10 balls. Since the ball is returned to the urn, the total number of balls remains 10 for the second draw. Therefore, the probability of choosing a 5 on the first and second draw is (1/10) * (1/10) = 1/100.