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 always above `A_(2)` and `A_(2)` is above `A_(3)` is

A

`(10!)/(3!)`

B

`(10!)/(2!)`

C

`8!3!`

D

`7!`

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

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

In how many ways 10 persons A_(1),A_(2),A_(3),A_(4),………., A_(10) can be seated along a row such that A_(1),A_(2),A_(3) sit together in a specified order

Find the number of ways of arranging 15 students A_(1),A_(2),…….,A_(15) in a row such that A_(2) must be seated after A_(1)andA_(2) must come after A_(2)

Knowledge Check

  • 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!`

  • 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

    A
    `9!2!`
    B
    `10!`
    C
    `10!2!`
    D
    `9!`

  • The number of all three element subsets of set {a_(1),a_(2),a_(3),.......,a_(n)} which contain a_(3) is

    A
    `""^(n)C_(3)`
    B
    `""^(n+1)C_(3)`
    C
    `""^(n-1)C_(2)`
    D
    `2^(n)`

    • Similar Questions

    Explore conceptually related problems

    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 10 persons A_(1),A_(2),……….A_(10) in a row if no two of A_(1),A_(2) and A_(3) come together.

    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.

    The number of subsets of the set A={a_(1),a_(2),………..a_(n)} which contain even number of elements is

    Home
    Profile