it is known that out of 750 bulbs 25 bulbs are defective.one bulb is taken out a random from the box what is the probability that it is (i) not defective (ii) not good
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Answered by
25
Answer:
A bulb is taken out at random from a box of 600 electric bulbs that contains 12 defective bulbs. Then the probability of a non - defective bulb is
Answered by
55
Answer:
29/30 & 1/30
Step-by-step explanation:
Total number of bulbs = 750
Defective bulbs = 25
It means, remaining bulbs are alright(not defective).
Not-defective bulbs = total - defective
= 750 - 25 = 725
Hence,
(i) Probability = not-defective/total
= 725/750
= 29/30
(ii) Probability = defective/total
= 25/750
= 1/30
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