A box contains $24$ tiles. Each tile has certain properties:

* Each tile is made of wood or plastic.

* Each tile is red, yellow, or blue.

* Each tile is a triangle, square, pentagon, or circle.

There is exactly one tile for each combination of properties. For example, there is one red circle that is made of wood.

Steve chooses one tile, and Ellen chooses a different tile. What is the probability that Steve's tile is wood or yellow, and that Ellen's tile is triangle or blue?

parmen Dec 21, 2023