Home
Class 12
MATHS
If the coefficients of r,(r +1 ),(r+2) t...

If the coefficients of r,(r +1 ),(r+2) terms in `(1+x)^14` are in A.P. then r =

A

3,2

B

5,9

C

2,4

D

5,3

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • BINOMIAL THEOREM

    AAKASH SERIES|Exercise EXERCISE - 1.1 (Level - 1) |52 Videos

  • BINOMIAL THEOREM

    AAKASH SERIES|Exercise EXERCISE - 1.2 (Level - 1) |19 Videos

  • BINOMIAL THEOREM

    AAKASH SERIES|Exercise EXERCISE - II|109 Videos

  • AREAS

    AAKASH SERIES|Exercise Exercise-3.2|21 Videos

  • CIRCLE

    AAKASH SERIES|Exercise EXERCISE -1.4|38 Videos

Similar Questions

Explore conceptually related problems

Assertion (A): In the expansion of (1+x)^n , three consecutive terms are 5, 10,10 then n = 5 Reason (R ): If the coefficient of r^(th), (r + 1)^(th), (r + 2)^(th) terms of (1 +x)^n are in A.P. then (n-2r)^2 = n +2

If the coefficients of (2r +1) ""^(th) term and (r+1 )^(th) term in the expansion of (1 + x) ^(42) are equal then r can be

If the coefficient of rth, (r + 1)th and (r+ 2)th terms in the expansion of (1 + x) ^(n) are respectively in the ratio 2:4:5, then (r,n)=

Sum of coefficients of x^(2r) , r = 1,2,3…. in (1+x)^n is

If the coefficients of r^(th) , (r + 1)^(th) and (r + 2)^(th) terms in the binomial expansion of (1 + y)^m are in A.P. then m and r satisfy the equation

AAKASH SERIES-BINOMIAL THEOREM-PRACTICE EXERCISE
  1. If the coefficients of 2nd , 3rd and 4th terms of the expansion of (1+...

    Text Solution

    |

  2. If the coefficients of 3rd, 4th , 5th terms in (1+x)^(2n) are A.P. the...

    Text Solution

    |

  3. If the coefficients of r,(r +1 ),(r+2) terms in (1+x)^14 are in A.P. t...

    Text Solution

    |

  4. If three successive coefficients in (1+x)^n are 6,15,20 then n =

    Text Solution

    |

  5. If a1,a2,a3,a4 are the coefficients of 2nd, 3rd, 4th and 5th terms of ...

    Text Solution

    |

  6. If a,b,c,d are conseentive binomial coefficients of (1+x)^n then (a+b)...

    Text Solution

    |

  7. Coefficient of x^5 in (1+x +x^2 +x^3)^10 is

    Text Solution

    |

  8. The coefficient of x^4 in the expansion of (1+x-2x^2)^7 is

    Text Solution

    |

  9. Binomial coefficients which are in decreasing order are

    Text Solution

    |

  10. Coefficient of x^3 in 1+(1+x) +(1 +x)^2 +…..+(1+x)^n is

    Text Solution

    |

  11. Sum of the coefficients of (1+2x-4x^2)^(2003)

    Text Solution

    |

  12. Sum of coefficients of terms of even powers of x in (1 + x + x^2 + x^...

    Text Solution

    |

  13. Sum of coefficients of terms of odd powers of in (1+x - x^2 -x^3)^8is

    Text Solution

    |

  14. If (1+x -2x^2)^8 =1 -a1x + a2x^2+……+a16x^16, then a2+a4+a6+……+a16 =

    Text Solution

    |

  15. If (1+x-2x^2)^8 = 1 + a1x + a2x^2 + ……+ a16 x^16, then a1 +a3 + a5 + …...

    Text Solution

    |

  16. (1+x)^25 = sum(r = 0)^(25) Cr x^r then C1 - C3 + C5 - C7 + ……-C25 =

    Text Solution

    |

  17. The sum of the coefficients in the expansion of (1+x-3x^2)^(171) is

    Text Solution

    |

  18. If the sum of all the binomial coefficients in (x+y)^n is 512 , then t...

    Text Solution

    |

  19. The coefficient of x^(-n) in (1+x)^n (1+(1)/(x))^n is

    Text Solution

    |

  20. If n is a positive integer then 2^(4n) - 15n - 1 is divisible by

    Text Solution

    |