InterviewSolution
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InterviewSolution
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The probability that bulbs selected randomly from the lot has life less than 900 h, isA. `11/40`B. `5/16`C. `7/16`D. `9/16` |
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Answer» Correct Answer - D Total number of bulbs in a lot, n(S)=80 Number of bulbs whose life time is less than 900h, n(E ) =10 + 12 + 23=45 `therefore` Probability that bulbs has life time less than 900 h`=(n(E ))/(n(S))=45/80=9/16` Hence, the probability that bulb has life time less than 900 is `9/16`. |
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