3 yellow pencils, one blue pencil, and 2 red pencils. There are also erasers. 2 red and one blue. What is the probability of getting the red-red combination?

Answer:
4 out of 10
Step-by-step explanation:
you have to add up all the numbers then add up all the colors they ask for
so their were 10 colors in all, and their were 4 red colors in all