Try this probability assignment

[Lorenzo]

Different color gum drops are placed into a large black jar and passed around the room. There are 27 pink gum drops, 19 orange gum drops, 12 black gum drops, and 4 purple gum drops. You are the first to pick a gum drop from the jar.

A. What is the probability of drawing:

    * Orange?
    * Pink?
    * Black?
    * Green?
    * Purple?
    * Purple or pink?
    * Orange or purple?
    * Purple and then black?

[Lorenzo]

Answer:


Different color gum drops are placed into a large black jar and passed around the room. There are 27 pink gum drops, 19 orange gum drops, 12 black gum drops, and 4 purple gum drops. You are the first to pick a gum drop from the jar.
The  probability of picking orage is 31%  (19/62); The probability of picking pink is 44% (27/62); the probability of picking black is 19% (12/62); the probability of picking green is 0% (0/62); the probability of picking purple is 6% (4/62).
The probability of  picking purple or pink is 50% (31/62); the probability of picking orange or purple is 37% (23/62); and the probability of picking purple and then is about 1.2% (4/62 X 12/62).