In a large bag of candy, each of the 5 colors (red, orange, yellow, blue, and green) occurs with the same probability. You reach in and select 1 candy. Find p (orange or red)

If each color appears with the same probability, then there is a 1/5 chance to pick any color.

Since picking orange and picking red are mutually exclusive (if you pick orange you can't also pick red), then P (orange or red) is just the sum of their two probabilities.

1/5 + 1/5 = 2/5 or 0.4