Question

Roshan is a wholesaler of electric bulb he sells a box of 600 electric bulbs which contains 12 defective bulbs to an electrician he gives 12 extra bulbs to the electricity in this process of replacing the defective bulbs and non defective bulbs the electrician takes out one bulb at random from the box what is the probability that it is non defective bulbs.​

Answer 1

Answer:

Total number of bulbs = 600

Total number of non-defective bulb = 600-12=588

P (non-defective bulbs) = 600/588

=0.98

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Answer 2

Answer:

The probablity it is not defective bulb is :

Total number of bulbs = 600

Number of defective bulb = 12

Number of non defective bulbs = 600 - 12 = 588

Percentage of non defective bulbs = 600 / 588 = 0.98

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