Home
Class 12
MATHS
The number of ways in which ten candidat...

The number of ways in which ten candidates `A_(1),A_(2),A_(3),A_(4),……,A_(10)` can be arranged in a row
if `A_(1)` is just above `A_(2)` then the number of ways are

A

`9!2!`

B

`10!`

C

`10!2!`

D

`9!`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS & COMBINATIONS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|163 Videos

  • PERMUTATIONS & COMBINATIONS

    AAKASH SERIES|Exercise EXERCISE-I|60 Videos

  • PARTIAL FRACTIONS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|31 Videos

  • PROBABILITY

    AAKASH SERIES|Exercise Practise Exercise|165 Videos

Similar Questions

Explore conceptually related problems

The number of ways in which ten candidates A_(1),A_(2),A_(3),A_(4),……,A_(10) can be arranged in a row if A_(1) and A_(2) are next to each other is

The number of ways in which ten candidates A_(1),A_(2),A_(3),A_(4),……,A_(10) can be arranged in a row If A_(1) is always above A_(2) and A_(2) is above A_(3) is

The number of ways in which candidates A_1,A_2 ,. . . A_(10) can be ranked if A_1 is always above A_2 is

Find the number of ways of arranging 15 students A_(1),A_(2),…….,A_(15) in a row such that neither A_(2) nor A_(3) be seated before A_(1)

Find the number of ways of arranging 15 students A_(1),A_(2),………A_(15) in a row such that A_(1),A_(2) and A_(3) sit together in specified order

Find the number of ways of seating 10 students A_(1), A_(2)…..A_(10) in a row such that (i) A_(1), A_(2), A_(3) sit together (ii) A_(1), A_(2), A_(3) sit in a specified order (iii) A_(1), A_(2),A_(3) sit together ina specified order.

AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE-II
  1. A : the number of ways in which 5 boys and 5 girls can sit in a r...

    Text Solution

    |

  2. The number of ways in which ten candidates A(1),A(2),A(3),A(4),……,A(10...

    Text Solution

    |

  3. The number of ways in which ten candidates A(1),A(2),A(3),A(4),……,A(10...

    Text Solution

    |

  4. The number of ways in which candidates A1,A2 ,. . . A(10) can b...

    Text Solution

    |

  5. The number of ways in which ten candidates A(1),A(2),A(3),A(4),……,A(10...

    Text Solution

    |

  6. Find the number of ways of seating 10 students A(1), A(2)…..A(10) in a...

    Text Solution

    |

  7. s(1),s(2) ...............,s(10) are the speakers in a conference, If s...

    Text Solution

    |

  8. The letters of the word 'HEXAGON' are arranged in all possible ways. I...

    Text Solution

    |

  9. 9 balls are to placed in 9 boxes : and 5 of the balls cannot ...

    Text Solution

    |

  10. The number of odd numbers having 4 digits can be formed from

    Text Solution

    |

  11. Total number of four digit odd numbers that can be formed using 0, 1, ...

    Text Solution

    |

  12. The number of four digit even numbers that can be formed from 0,1,2,3,...

    Text Solution

    |

  13. The number of positive integers which can be formed by any number of d...

    Text Solution

    |

  14. The number of natural numbers less than 1000, in which no two dig...

    Text Solution

    |

  15. The number of 5-digited numbers which are not divisible by 5 and which...

    Text Solution

    |

  16. The number of four-digit numbers formed by using the digits 0,2,4,5 an...

    Text Solution

    |

  17. The number of four digited numbers formed by 1, 2, 5, 6, 7 divisible b...

    Text Solution

    |

  18. The number of four digited numbers formed by 2, 4, 5, 7, 8 divisible b...

    Text Solution

    |

  19. Five digit numbers divisible by 3 is formed using 0, 1, 2, 3, 4 and 5 ...

    Text Solution

    |

  20. The number of 5 digited numbers that can be formed using the digits 0...

    Text Solution

    |