Exercise 6

A ball is drawn randomly from a jar containing 18 black marbles, 4 purple marbles, and 9 blue marbles. Find the probability of:

1. Drawing a black marble.

2. Not drawing a purple marble.

3. Drawing a blue or purple marble.

4. Drawing a yellow marble.

5. Drawing two black marbles if you draw with replacement.

6. Drawing first a blue marble then a black marble if marbles are drawn without replacement.