Home
Class 11
MATHS
The number of ways in which 7 persons ca...

The number of ways in which 7 persons can be seated at a round table if twom particular persons are not to sit together is

A

120

B

480

C

600

D

720

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PARABOLA, ELLIPSE AND HYPERBOLA

    PATHFINDER|Exercise QUESTION BANK|66 Videos

  • PERMUTATION AND COMBINATIONS

    PATHFINDER|Exercise QUESTION BANK|81 Videos

Similar Questions

Explore conceptually related problems

The number of ways in which 5 letters can be posted in 10 letter boxes is

The number of ways in which six boys and six girls can be seated at a round table so that no two girls sit together and two particular girls do not sit next to a particular boy is

Find the number of ways in which six persons can be seated at a round table, so that all shall not have the same neighbours n any two arrangements.

Find the number of ways in which 6 men and 5 women can dine at around table if no two women are to sit so together.

In how many ways can 6 men be seated at a round table ?

A team of four students is to be selected from a total of 12 students. The total number of ways in which the team can be selected such that two particular students refuse to be together and other two particular students wish to be together only is equal to a. 220 b. 182 c. 226 d. none of these

Show that the number of ways in which n books may be arranged on a shelf so that two particular books shall not be together is (n-2)(n-1)!

Number of ways in which 200 people can be divided in 100 couples is -

The number of ways four boys can be seated around a round-table in four chairs of different colours is

Find the number of ways in which 8 different flowered can be strung to form a garland so that four particular flowers are never separated.

PATHFINDER-PERMUTATION AND COMBINATION-QUESTION BANK
  1. If .^nc(r-1)=10,.^nc(r)=45 and .^nc(r+1)=120 then r equals

    Text Solution

    |

  2. The total number of five digit numbers of different digits in which th...

    Text Solution

    |

  3. The number of ways in which 7 persons can be seated at a round table i...

    Text Solution

    |

  4. Number of divisors of the form 4n+2(nge0) of the integer 240 is

    Text Solution

    |

  5. Total number of words formed by using 2 vowels and 3 consonants taken ...

    Text Solution

    |

  6. If 5 parallel straight lines are intersected by 4 parallel straight li...

    Text Solution

    |

  7. Everybody in a room shakes hand with everybody else the total number o...

    Text Solution

    |

  8. Given that n is the odd the number of ways in which three numbers in A...

    Text Solution

    |

  9. The total number of numbers that can be formed by using all the digits...

    Text Solution

    |

  10. The number of arrangements two letters of the word BANANA in which two...

    Text Solution

    |

  11. The maximum number of points of intersection of 8 straight lines is

    Text Solution

    |

  12. The letters of the word COCHIN are permuted and all the permutations a...

    Text Solution

    |

  13. Two straight lines intersected at a point O.points A1,A2….An are taken...

    Text Solution

    |

  14. A five digit number divisible by 3 has to formed using the numerals 0,...

    Text Solution

    |

  15. 4 points out of 8 points in a plane are collinear number of different ...

    Text Solution

    |

  16. A rectangle with sides 2m-1 and 2n-1 divided into squares of unit leng...

    Text Solution

    |

  17. If a,b,c in N the number of points having position vector ahati+bhatj+...

    Text Solution

    |

  18. A function is defined as f:{a1,a2,a3,a4,a5,a6}rarr{b1,b2,b3} then numb...

    Text Solution

    |

  19. Let A =(x1,x2,x3,x4,x5,x6}B={y1,y2,y3,y4,y5,y6} then the number of one...

    Text Solution

    |

  20. A function is defined as f:{a1,a2,a3,a4,a5,a6}rarr{b1,b2,b3} then numb...

    Text Solution

    |