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If there are two children in a family,fi...

If there are two children in a family,find the probability that there is atleast one girl in a family.

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PSEB-PROBABILITY-Exercise
  1. Suppose that 5% of men and 0.25% of women have grey hair. A grey haire...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  17. Bag I contains 3 red and 4 black balls and Bag II contains 4 red and 5...

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  18. If A and B are two events such that P(A) ne 0 and P(B/A) = 1, then

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  19. If P(A/B) > P(A), then which of the following is correct : :

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  20. If A and B are any two events such that : P(A) + P(B) – P(A and B) = P...

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