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A carton of 24 bulbs contain 6 defective bulbs. One bulb is drawn at random. What is the probability that the bulb is not defective? If the bulb selected is defective and it is not replaced and a second bulb is selected at random from the rest, what is the probability that the second bulb is defective? |
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Answer» There are 6 defective bulbs out of 24 bulbs ∴ Probability that the bulb is not defective =18/24=3/4 When the selected bulb is defective and not replaced, then ∴ Probability that the second bulb is defective =5/23 |
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