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If a box contains 10 bulbs,of which just three are defective. If a random sample of five bulbs is drawn, find the probability that the sample contains no defective bulbs.
Total number of elementary events = 10C5
Number of ways of selecting no defective bulbs i.e., 5 non-defective bulbs out of 7 is 7C5
So,required probability =7C5 /10C5 = 1/12.
Hence, option 1 is the correct answer.
By: Amit Kumar ProfileResourcesReport error
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