Textbook Problem

$29-30$ Refer to the spinner in Exercises $21-22$.

Find the probability that the spinner has stopped on an even number, given that it has stopped on red.

$21\text{-}22$ Refer to the spinner shown in the figure. Find the probability of the given event.

(a) The spinner stops on red.

(b) The spinner stops on an even number.

(c) The spinner stops on red or an even number.

(a) The spinner stops on blue.

(b) The spinner stops on an odd number.

(c) The spinner stops on blue or an odd number.