A box contains 3 yellow beads, 4 black beads, and 4 green beads. If one bead is chosen without looking, what is the probability that it is yellow?
- 3 yellow beads
- 4 black beads
- 4 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 3 yellow beads.
- Then count all possible outcomes: 3 + 4 + 4 = 11.
- Probability means favorable outcomes divided by total outcomes, so the probability is 3/11, which simplifies to 3/11.
The correct answer is 3/11. This matches the calculation or definition, so students should focus on the reasoning rather than only memorizing the final value.