Out of 400 bulbs in a box, 15 bulbs are defective. One bulb is taken at random from the box. Find the probability that the bulb is not defective.
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Answer:
Total number of outcomes (i.e. number of bulbs) = 400
Number of defective bulbs = 15
Therefore, number of non-defective bulbs = 400 - 15 = 385
Probability = Possible outcomes / Total outcomes
= 385 / 400 = 77/80 = 96.25%
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the answer is given above.
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