Engineering Board Exam Reviewer · Basic Probability · medium
A box contains 3 defective and 7 good bulbs. Two bulbs are drawn at random without replacement. What is the probability that both are defective?
- 1/15
- 1/10
- 3/10
- 1/5
Answer
A. 1/15
Solution
P= 32 102=3/45=1/15.
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