A box contains 4 orange beads, 5 black beads, and 7 green beads. If one bead is chosen without looking, what is the probability that it is green?
- 4 orange beads
- 5 black beads
- 7 green beads
Choose the best answer.
Note
For basic probability, compare the number of favorable outcomes with the total number of equally likely outcomes.
- Count the favorable outcomes first: there are 7 green beads.
- Then count all possible outcomes: 4 + 5 + 7 = 16.
- Probability means favorable outcomes divided by total outcomes, so the probability is 7/16, which simplifies to 7/16.
The correct answer is 7/16. This matches the calculation or definition, so students should focus on the reasoning rather than only memorizing the final value.