A bag contains 20 colored blocks.
5 of them are black
5 of them are green, and
10 are red
You randomly draw 3 blocks out of the bag.
(c) What is the probability that all 3 are the same color (all black or all green or all red)?
(d) What is the probability that the 3 blocks are each a different color?
Jamal has 8 red jelly beans and 9 green jelly beans in a bag. He reaches into his bag and comes out with 4 jelly beans in his hand
(b) What is the probability that the jelly beans in his hand are all the same color (all red or all green)?