A box contains 28 bulbs of which 7 bulbs are defective, a is drawn randomly from the box find the probability of picking a non defective bulb
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Answered by
7
Answer:28 - 7 = 21 so the no. of non defective bulbs are 21 . so the probability of drawing out a non defective bulb = 21/28
Explanation:
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4
Answer:
Explanation:
21/28=3/4
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