it is known that a box of 200 electric bulbs contains 20 defective bulbs.one bulb is taken out at random from this box.what is the probability that is a non-defective bulb?
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Total no. of bulbs = 200
No. of defective bulbs = 20
No. of non - defective bulbs = 180
So Probability of getting a non defective bulb is
180 / 200
= 9 / 10
HOPE THIS HELPS YOU ...
No. of defective bulbs = 20
No. of non - defective bulbs = 180
So Probability of getting a non defective bulb is
180 / 200
= 9 / 10
HOPE THIS HELPS YOU ...
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