Question

On a shelf in the library there are 75 novels and 50 non-fiction books. Student A chooses a book at random off the shelf and leaves with it. Shortly after, student B chooses another book on the shelf at random. What is the probability that both students chose a novel?

A. 111/310

B.45/124

C. 9/25

D. 118/127

Answer 1

Total book = 75 + 50 = 125

P(both students chose a novel) = P(student A chooses a novel) * P(student B chooses a novel)

                                                  = (75/125) * (75/125)

                                                  = 9/25

Option-C) 9/25