Home
Class 12
MATHS
Assume that in a family, each child is e...

Assume that in a family, each child is equally likely to be a boy or a girl. A family with three children is chosen at random. The probability that the eldest child is a girl given that the family has atleast one girl is ………..

A

`(1)/(2)`

B

`(1)/(3)`

C

`(2)/(3)`

D

`(4)/(7)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (True/False) |10 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Fillers) |5 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Long Answer Type Questions) |16 Videos

  • MATRICES

    KUMAR PRAKASHAN|Exercise Practice Paper - 3 (Section - D)|1 Videos

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Practice Paper - 1 (Section - D)|2 Videos

Similar Questions

Explore conceptually related problems

Assume that each born child is equally likely to be a boy or a girl. If a family has two children, what is the conditional probability that both are girls given that  (i) the youngest is a girl, (ii) at least one is a girl?

6 boys and 6 grils sit in a row at random. The probability that all the girls sit together is

In a family having two children if one of the child is a girl, then the probability that other is also a girl is ………..

Three boys and two girls stand in a queue. The probability, that the number of boys ahead is at least one more than the number of girls ahead of her, is

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.

An organisation selected 2400 families at random and surveyed them to determine a relationship between income level and the number of vehicles in a family . The information gathered is listed in the table below Suppose a family is chosen, Find probability that the family chosen is earning Rs 16000 or more per month and owning exactly 1 vehicle.

An organisation selected 2400 families at random and surveyed them to determine a relationship between income level and the number of vehicles in a family . The information gathered is listed in the table below Suppose a family is chosen, Find probability that the family chosen is earning Rs 10000 - Rs 13000 per month and owning exactly 2 vehicles.

An organisation selected 2400 families at random and surveyed them to determine a relationship between income level and the number of vehicles in a family . The information gathered is listed in the table below Suppose a family is chosen, Find probability that the family chosen is earning Rs 13000 - Rs 16000 per month and owning more than 2 vehicles.

Assume that a dart will hit the dart board and each point on the dart board is equally likely to be hit in all the three concentric circles where radii of concetric circles are 3 cm, 2 cm and 1 cm as shown in the figure below. Find the probability of a dart hitting the board in the region A. (The outer ring)

KUMAR PRAKASHAN-PROBABILITY-Solutions of NCERT Exemplar Problems (Objective type Questions)
  1. A bag contains 5 red and 3 blue balls. If 3 balls are drawn at random ...

    Text Solution

    |

  2. A bag contains 5 red balls and 3 black marbles. Three balls are drawn ...

    Text Solution

    |

  3. Three persons A, B and C, fire at a target in turn starting with A. Th...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  7. A flashlight has 8 batteries out of which 3 are dead. If two batteries...

    Text Solution

    |

  8. Eight coins are tossed together. The probability of getting exactly 3 ...

    Text Solution

    |

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

    Text Solution

    |

  10. Which one is not a requirement of a binomial distribution ?

    Text Solution

    |

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

    Text Solution

    |

  12. The probability of guessing correctly atleast 8 out of 10 answers on a...

    Text Solution

    |

  13. The probability that a person is not a swimmer is 0.3. The probability...

    Text Solution

    |

  14. The probability distribution of a discrete random variable X is given ...

    Text Solution

    |

  15. For the following probability distribution : E(X) is equal to .....

    Text Solution

    |

  16. For the following probability distribution E(X^(2)) is equal to ....

    Text Solution

    |

  17. Suppose a random variable X follows the binomial distribution with par...

    Text Solution

    |

  18. In a college, 30% students fail in physics, 25% fail in mathematics an...

    Text Solution

    |

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

    Text Solution

    |

  20. A box has 100 pens of which 10 are defective. What is the probability ...

    Text Solution

    |