Question: There are 144 instructors who taught classes involving probability over the last year. One-third of these instructors are nice while the others are not. Of

There are 144 instructors who taught classes involving probability over the last year. One-third of these instructors are nice while the others are not. Of the 144 instructors, 83 of them asked questions about playing cards on their final exam. Of the nice instructors, 13 of them asked their students questions about playing cards on their final exam. If you randomly choose one of these instructors, what is the probability that they didnotask questions about playing cards on the final, given that they are nice?

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