it is known that a box of 600 bulks contains 12 defective bulks one bulks is taken out random-ly from this box . what is the probability that it is non defective ?
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Answer:
Given as :
The number of bulb in the box = 600
The number of defective bulb in box = 12
Let The probability that one bulb taken out random is non-defective = p(E)
According to question
As out of 600 bulbs, 12 bulbs are defective
So, The number of non-defective bulb = 600 - 12 = 588
Now, out of 600 bulbs, 1 bulb is chosen in
And favourable case of chosen non-defective =
So, probability =
Or, p(E) =
Or, p(E) =
Hence, The probability that one bulb taken out random is non-defective is . Answer
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