Home
Class 12
MATHS
A couple has two children, (i) Find t...

A couple has two children,
(i) Find the probability that both children are males, if it is known that at least one of the children is male.
(ii) Find the probability that both children are females, if it is known that the elder child is a female.

Text Solution

Verified by Experts

The correct Answer is:
(i) `(1)/(3)` (ii) `(1)/(2)`
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    NCERT BANGLISH|Exercise EXERCISE 3.5|15 Videos
  • MATRICES

    NCERT BANGLISH|Exercise Miscellaneous Exercise on Chapter 3|15 Videos
  • RELATIONS AND FUNCTIONS

    NCERT BANGLISH|Exercise MISCLELLANEOUS EXERCISE ON CHAPTER 1|19 Videos

Similar Questions

Explore conceptually related problems

A couple has 2 children. Find the probability that both are boys, if it is known that (i) one of the children is a boy (ii) the elder child is a boy

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 ?

It is known that a family has 3 childern and at least 1 of these 3 childern is boy. Find the probability that 2 of the 3 chilidren are boys.

It is known that a family has 3 childern and at least 1 of these 3 childern is girl. Find the probability that all of the 3 chilidren are girl.

Find the probility that in a family of 5 children there will be at least one boy and one girl.

Find the probility that in a family of 5 children there will be at least one boy.

Find the probability that in a family of 4 children there will be at least 1 boy and 1 girl.

Given that a family of two children has a boy , what is the probability that the other also is a boy?

In a family, out of 3 children, one of them at least Boy. Find the porbability of two boys in this family.

If A and B are two independent events, the probability that both A and B occur is 1/8 are the probability that neither of them occours is 3/8. Find the probaility of the occurrence of A.

NCERT BANGLISH-PROBABILITY-MISCELLANEOUS EXERCISE ON CHAPTER 13
  1. A and B are two events such that P (A) != 0. Find P(B|A), if (i) A ...

    Text Solution

    |

  2. A couple has two children, (i) Find the probability that both child...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  9. An experiment succeeds twice as often as it fails. Find the probabilit...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  17. Choose the correct answer: If A and B are two events such that P(A) ...

    Text Solution

    |

  18. Choose the correct answer: If P(A|B) gt P(A), then which of the foll...

    Text Solution

    |

  19. Choose the correct answer: If A and B are any two events such that P...

    Text Solution

    |