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A family has two children. What is the p...

A family has two children. What is the probability that both the children are boys given that at least one of them is a boy ?

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PSEB-PROBABILITY-Exercise
  1. A and B are two events such that P (A) ne 0. Find P(B|A),if : A is a ...

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  2. A and B are two events such that P (A) ne 0. Find P(B|A),if : AcapB = ...

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  3. A family has two children. What is the probability that both the child...

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  4. In a family, with two children, the probability of both children are g...

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  5. Suppose that 5% of men and 0.25% of women have grey hair. A grey haire...

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  6. Suppose that 90% of people are right-handed. What is the probability t...

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  7. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

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  8. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

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  9. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

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  10. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

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  11. In a hurdle race, a player has to cross 10 hurdles. The probability th...

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  12. A die is thrown again and again until three sixes are obtained. Find t...

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  13. If a leap year is selected at random, what is the chance that it will ...

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  14. If there are two children in a family,find the probability that there ...

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  15. If a fair coin is tossed 10 times, find the probability of: at most s...

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  16. In a game, a man wins a rupee for a six and loses a rupee for any othe...

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  17. Assume that the chances of a patient having a heart attack is 40%. It ...

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  18. If each element of a second order determinant is either zero or one, w...

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  19. An electronic assembly consists of two subsystems, say, A and B. From ...

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  20. An electronic assembly consists of two subsystems, say, A and B. From ...

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