- Messages
- 3

- Reaction score
- 0

- Points
- 11

white cubes. Three objects are selected randomly without replacement from the box.

The events A and B are defined as follows:

A : Exactly two of the objects drawn are balls

B : Exactly one of the objects drawn is red in colour

Show that P(A) = 7/40 and find P(B) and P(A n B).