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1. Out of 10 persons working on a project, 4 are graduates. If 3 are selected, what is the probability that there is at least one graduate among them?
- A. 1/6
- B. 1/6
- C. 1/6
- D. 1/6
Answer: Option D
Explanation:
Non-graduate = 10-4 = 6
P(non-graduate) = 6C3/10C3 = 1/6
P(graduate) = 1-1/6 = 6-1/6 = 5/6
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