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Suppose 3 bulbs are selected at random f...

Suppose 3 bulbs are selected at random from a lot.Each bulb is tosted and classified as defective (D) ar non-defective (N).Write the sample space of this experiment.

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The correct Answer is:
` therefore ` Sample space ={DDD,DDN,DND,NDD,DNN,NDN,NND,NNN)
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(i) A lot of20 bulbs sontains 4 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective? (ii) Suppose the bulb drawn in (i) is not defective and is not replaced. Now one bulb is drawn at random from the rest. What is the probability that this bulb is not defective?

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SUBHASH PUBLICATION-PROBABILITY -TWO MARKS QUESTION WITH ANSWER
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