Home
Class 14
MATHS
Seven persons are to be seated in a row....

Seven persons are to be seated in a row. The probability that two particular persons sit next to each other is (A) `1/3` (B) `1/6` (C) `2/7` (D) `1/2`

A

`1/3`

B

`1/2`

C

`1/4`

D

`2/3`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    DISHA PUBLICATION|Exercise PRACTICE EXERCISE (EXPERT LEVEL)|46 Videos

  • PROBABILITY

    DISHA PUBLICATION|Exercise TEST YOURSELF|15 Videos

  • PROBABILITY

    DISHA PUBLICATION|Exercise PRACTICE EXERCISE (FOUNDATION LEVEL)|83 Videos

  • PERMUTATIONS AND COMBINATIONS

    DISHA PUBLICATION|Exercise TEST YOURSELF|15 Videos

  • PROFIT, LOSS AND DISCOUNT

    DISHA PUBLICATION|Exercise Test Yourself|15 Videos

Similar Questions

Explore conceptually related problems

Suppose n ( ge 3) persons are arranged in a row. The probability that two particular persons are not together is

12 persons are seated around a round table. What is the probability that two particular persons sit together?

In a party 23 persons take their seats at a round table. The odds against two particular persons sitting together are :

There are n person sitting in a row two of them are selected at random the probability that two selected persons are not together is

10 persons sit around a circular table with 10 numbered chairs.The probability that the two particular persons A andB are always together is

DISHA PUBLICATION-PROBABILITY-PRACTICE EXERCISE (STANDARD LEVEL)
  1. Let A and B be two events such that P (bar(AuuB))=1/6, P(AnnB)=1/4and ...

    Text Solution

    |

  2. Seven digits from the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 are written...

    Text Solution

    |

  3. A committee of 5 Students is to be chosen from 6 boys and 4 girls. Fin...

    Text Solution

    |

  4. There are 10 envelopes and 10 letters to go inside them. Each letter i...

    Text Solution

    |

  5. A three digit number is written down by random choice of the digits 1 ...

    Text Solution

    |

  6. 4 gentlemen and 4 ladies take seats at random round a table. The proba...

    Text Solution

    |

  7. Two cards are drawn one by one from a pack of cards. The probability o...

    Text Solution

    |

  8. Seven persons are to be seated in a row. The probability that two part...

    Text Solution

    |

  9. The odds against A solving a certain problem are 3 to 2 and the odds i...

    Text Solution

    |

  10. If two events A and B are such that P(A')=0.3, P(B)=0.4 and P(A nn B')...

    Text Solution

    |

  11. If A and B are two events such that P(A) ne 0 and P(B) ne 1 then P(...

    Text Solution

    |

  12. Let 0ltP (A)lt1, 0ltP(B) lt1and P(A uu B)=P(A)+P(B)-P(A)*P(B) then (A...

    Text Solution

    |

  13. A group of researchers took a fair sample of 1972 children from the ge...

    Text Solution

    |

  14. A life insurance company insured 25,000 young boys, 14,000 young girls...

    Text Solution

    |

  15. Eleven books, consisting of five Engineering books, four Mathematics b...

    Text Solution

    |

  16. 12 persons are seated around a round table. What is the probability th...

    Text Solution

    |

  17. The probability of a bomb hitting a bridge is 1/2 and two direct hits...

    Text Solution

    |

  18. A number is chosen at random from the numbers 10 to 99. By seeing the ...

    Text Solution

    |

  19. The probabilities that a student passes in Mathematics, Physics and Ch...

    Text Solution

    |

  20. Two small squares on a chess board are choosen at random. Find the pro...

    Text Solution

    |