Probability

Question

Tiles numbered 1 through 20 are placed in a box. Tiles numbered 11 through 30 are placed in a second box. One tile is randomly drawn from each box. Find each probability.

The first tile is less than 15 and the second tile is even or greater than 25.

Answer 1

Tile 1:  Success = 1-14, so probability of success = 14/20 = 70%.

Tile 2:  Success = 12, 14, 16, 18, 20, 22, 24, and 26-30, so probability of success = 12/20 = 60%.