Home
Class 12
MATHS
If .^(n)C(4),.^(n)C(5), .^(n)C(6) are in...

If `.^(n)C_(4),.^(n)C_(5), .^(n)C_(6)` are in A.P., then find the value of n.

A

14

B

11

C

7

D

8

Text Solution

Verified by Experts

The correct Answer is:
A,C
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS AND COMBINATIONS

    AAKASH INSTITUTE|Exercise Assignment Section D Linked Comprehension Type Questions|12 Videos
  • PERMUTATIONS AND COMBINATIONS

    AAKASH INSTITUTE|Exercise Assignment Section E (Assertion-Reason Type Questions)|5 Videos
  • PERMUTATIONS AND COMBINATIONS

    AAKASH INSTITUTE|Exercise Assignment Section B Objective type questions (One option is correct )|39 Videos
  • MATRICES

    AAKASH INSTITUTE|Exercise Assignment (Section - J) Aakash Challengers Questions|3 Videos
  • PRINCIPLE OF MATHEMATICAL

    AAKASH INSTITUTE|Exercise Section-D:(Assertion-Reason Type Questions)|12 Videos

Similar Questions

Explore conceptually related problems

If sim nC_(4),^(n)C_(5),^(n)C_(6) are in A.P.then the value of n is

If nC_(4),^(n)C_(5) and ^(n)C_(6) are in AP, then n is

If .^(n)C_(8)=.^(n)C_(6) , find .^(n)C_(3) .

If .^(2n)C_(4): .^(n)C_(3)=21:1 , then find the value of n.

If ^(n)C_(4),^(n)C_(5) and .^(n)C_(6) are in A.P.then n is equal to (A)11(B)14(C)12(D)9

If ""^(2n)C_(1), ""^(2n)C_(2) and ""^(2n)C_(3) are in A.P., find n.

AAKASH INSTITUTE-PERMUTATIONS AND COMBINATIONS -Assignment Section C Objective type questions (One option is correct )
  1. If .^(n)C(4),.^(n)C(5), .^(n)C(6) are in A.P., then find the value of ...

    Text Solution

    |

  2. the results of 11 chess matches (as win , lose or draw ) are to be fo...

    Text Solution

    |

  3. A student has to answer 10 out of 13 questions in an examination. T...

    Text Solution

    |

  4. Let N denote the number of ways in which n boys can be arranged in a l...

    Text Solution

    |

  5. The kindergarten teacher has 25 kid in her class. She takes 5 of them ...

    Text Solution

    |

  6. The number of ways in which 20 girls be seated round a table if there ...

    Text Solution

    |

  7. The number of non-negative integral solution x1 + x2 + x3 + x4 <=n (wh...

    Text Solution

    |

  8. If N is the number of positive integral solutions of x1x2x3x4 = 770, t...

    Text Solution

    |

  9. There are n white and n black balls marked 1, 2, 3,…..,n. The number o...

    Text Solution

    |

  10. There are 15 bulbs in a room. Each one of them can be operated indepen...

    Text Solution

    |

  11. The number of ways in which 5 distinct toys can be distributed among 8...

    Text Solution

    |

  12. The number of six digit numbers that can be formed from the digits 1,2...

    Text Solution

    |

  13. Find the number of integers which lie between 1 and 10^6 and which hav...

    Text Solution

    |

  14. sum(r=0)^(m) ""^(n+r)C(n) is equal to

    Text Solution

    |

  15. Between two junction stations A and B there are 12 intermediate statio...

    Text Solution

    |

  16. If m parallel lines in a plane are intersected by a family of n par...

    Text Solution

    |

  17. There are n straight lines in a plane in which no two are parallel and...

    Text Solution

    |