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A bag contains 7 white & 3 black balls. ...

A bag contains 7 white & 3 black balls. Two balls are drawn at random one after the other without replacedment. Find the probability that balls drawn are black .

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`=(1)/(15)`
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MAHENDRA-PROBABILITY -EXERCISE
  1. A bag contains 7 white & 3 black balls. Two balls are drawn at random ...

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  2. In a simultaneous toss of two coins ,find the probability of tails .

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  3. In a simultaneous toss of two find the probability of exactly 1 tail .

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  4. In a simultaneous toss of two coins ,find the probability of tails .

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  5. Three coins are tossed .Find the probability of heads .

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  6. Three coins are tossed .Find the probability of exactly 2 heads .

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  7. Three coins are tossed .Find the probability of no heads .

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  8. Three unbiased coins are tossed. Find the probability of getting atlea...

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  9. Four coins are tossed once .Find the probability of exactly 3 tails.

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  10. Four coins are tossed once .Find the probability of exactly 2 tail .

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  11. In a single throw of two dice .Find the probability of doublet ?

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  12. Two unbiased dice are rolled.Find the probability of getting a multipl...

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  13. Two unbiased dice are rolled.Find the probability of getting a multipl...

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  14. The letters of word SOCIETY are placed in a row .What is the probabili...

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  15. Find the probability that in a random arrangement of letters of the wo...

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  16. If letters of the word PENCIL are arranged in random order ,What is th...

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  17. What is the probability that one card drawn at random from the pack of...

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  18. In a class of 25 students with roll numbers 1 to 25 ,a student is pick...

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  19. A card is drawn from a pack of 52 cards .find the probability of getti...

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  20. Find bag contains 4 white and 2 black balls .Another contains 3 white ...

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  21. Find bag contains 4 white and 2 black balls .Another contains 3 white ...

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