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A couple has two children, find the prob...

A couple has two children, find the probability that both children are females, if it is known that the elder childis a female.

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MODERN PUBLICATION-PROBABILITY-EXERCISE
  1. A and B are two events such that P (A) ne 0. Find P(B|A),if : AcapB = ...

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

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  3. A couple has two children, find the probability that both children are...

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

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

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

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

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

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  13. Two dice are thrown simultaneously. Find the probability of getting si...

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  14. How many times must a man toss a fair coin so that the probability of ...

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

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  16. Suppose we have four boxes A,B,C and D containing coloured marbles as ...

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  17. Suppose we have four boxes A,B,C and D containing coloured marbles as ...

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  18. Suppose we have four boxes A,B,C and D containing coloured marbles as ...

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

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

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