There are 9 orange tiles and 5 yellow tiles in a bag. One tile is selected at random. What is the probability of NOT selecting a orange tile?
- 9 orange tiles
- 5 yellow tiles
Choose the best answer.
Note
For a “not” event, count the outcomes outside the named event. This is the complement of the event.
- The complement of selecting orange is selecting any other color.
- There are 5 non-orange tiles out of 14 total tiles.
- So the probability is 5/14 = 5/14.
- A complement probability can also be found by doing 1 minus the probability of the event.
The correct answer is 5/14. This matches the calculation or definition, so students should focus on the reasoning rather than only memorizing the final value.