Question

Gina has 20 collector stamps. 8 stamps are blue, 6 are red and 5 have both colors. If a stamp is chosen at random, what is the probability that the stamp has a blue or red color on it?
well, 19 of the 20 stamps have some blue or red, right?

Related Questions

Carol has a collection of 100 stamps. The graph shows the percentage of stamps she has from each co... Silvia has a collection of stamps from around the world as listed below. 4 stamps from Mexico 3... Paul has 183 stamps. His friend gave him 15 stamps for his birthday. How many stamps does Paul have...