8. A ball is drawn at random from a container that holds 8 yellow balls numbered 1 to 8, 6 orange balls numbered 1 to 6, and 10 gray balls numbered 1 to 10.

What is the probability of obtaining an orange ball or a ball numbered 5 or an orange ball numbered 5 in a draw of one ball? What is the probability of a gray ball or a ball numbered 8 or a gray ball numbered 8 in a draw of one ball?