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A flash light has 8 batteries out of whi...

A flash light has 8 batteries out of which 3 are dead. If two batteries are selected without replacement and tested, the probability that both are dead is `3/(28)` b. `1/(14)` c. `9/(64)` d. `(33)/(56)`

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RD SHARMA ENGLISH-PROBABILITY-All Questions
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  2. If A and B are two events such that P(A)=0. 4 ,\ P(B)=03\ a n d\ P(Auu...

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  3. If A and B are two events such that A!=varphi,\ B=varphi, then a.P(A//...

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  4. If the events A and B are independent then P(AnnB) is equal to :: a.P...

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  5. If A and B are two independent events with P(A)=3/5a n d\ P(B)=4/9, t ...

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  6. If A and B are two independent events such that P(A)=0. 3 ,\ P(AuuB)=0...

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  7. A flash light has 8 batteries out of which 3 are dead. If two batterie...

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  8. A bag contains 5 red and 3 blue balls. If 3 balls are drawn at random ...

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  9. A bag containing 5 red and 3 blue balls. If 3 balls are drawn at rando...

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  10. In a college 30% students fail in Physics, 25% fail in Mathematics and...

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  11. Three persons A,B and C fire a target in turn . Their probabilities of...

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  12. A and B are two students. Their chances of solving a problem correctly...

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  13. Two cards are drawn from a well shuffled deck of 52 playing cards with...

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  14. A box contains 3 orange balls, 3 green balls and 2 blue balls. Three ...

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  15. If two events are independents, then A. They must be mutually exclusiv...

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  16. Two dice are thrown. If it is known that the sum of the numbers on the...

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  17. If A and B are two events such that P(A//B)=p , P(A)=p , P(B)=1/3a n d...

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  18. A die is thrown and a card is selected at random from a deck of 52 ...

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  19. Assume that in a family, each child is equally likely to be a boy or g...

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  20. Let A and B be two events. If P(A)=0. 2 ,\ P(B)=0. 4 ,\ P(AuuB)=0. 6\ ...

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