The Mars Company says that before the introduction of purple, yellow made up 20% of their plain M&M candies, red made up another 20%, and orange, blue, and green each made up 10%. The rest were brown.
a) If you picked an M&M at random from a pre-purple bag of candies, what is the probability that it was:
i) Brown?
ii) Yellow or orange?
iii) Not green?
iv) Striped?
b) Assuming you had an infinite supply of M&M’s with the older color distribution, if you picked three M&M’s in a row, what is the probability that:
i) They are all brown?
ii) The third one is the first one that’s red?
iii) None are yellow?
iv) At least one is green?