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It is known that a box of 200 electric b...

It is known that a box of 200 electric bulbs contains 16 defective bulbs.
One bulb is taken out at random from the box. What is the probability that the bulb drawn is (i) defective, (ii) nondefective?

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The correct Answer is:
` (i) 2/25 (ii) 23/25`
Total number of bulbs = 200.
Number of defective bulbs = 16.
Number of non-defective bulbs = 200 - 16 = 184.
(i) P(getting a defective bulb) = ` 16/200 = 2/25`.
(ii) P(getting a non-defective bulb ) = ` (184)/200 = 23/25`.
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RS AGGARWAL-PROBABILITY-Exercise 19A
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  3. It is known that a box of 200 electric bulbs contains 16 defective bul...

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  10. In a family of 3 children, find the probability of having at least one...

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  11. A bag contains 4 white balls, 5 red balls, 2 black balls and 4 green b...

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  12. A card is drawn at random from a well-shuffled pack of 52 cards. Fin...

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  13. A card is drawn at random from a well - shuffled pack of 52 cards. Fin...

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  14. A card is drawn from a well-shuffled pack of 52 cards. Find the proba...

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  15. Two different dice are tossed together. Find the probability that (i) ...

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  16. Two different dice are rolled simultaneously. Find the probability th...

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  17. Two different dice are thrown together. Find the probability that (i...

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  18. Two dice are rolled together. Find the probability of getting such nu...

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  19. Two dice are rolled together. Find the probability of getting such num...

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