1. M&M s. The Masterfoods company says that before the introduction of purple, yellow candies made up 20% of their plain M&M’s, red another 20%, and orange, blue, and green each made up 10%. The rest...

1. M&M s. The Masterfoods company says that before the introduction of purple, yellow candies made up 20% of their plain M&M’s, red another 20%, and orange, blue, and green each made up 10%. The rest were brown.

a) If you pick an M&M at random, what is the probability that

1) it is brown?

2) it is yellow or orange?

3) it is not green?

4) it is striped?

b) If you pick three M&M’s in a row, what is the probability that

1) they are all brown?

2) the third one is the first one that s red?

3) none are yellow?

4) at least one is green?