Home
Class 12
MATHS
The first three terms in the expansion o...

The first three terms in the expansion of `(1+ ax) ^(n) ` are 1, `6x and 16x^(2),` then the values of a and n are -

A

`a=2, n=9`

B

`a=2, n=3`

C

`a=3/2, n=6`

D

`a= 2/3, n=9`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MCQ's

    CHHAYA PUBLICATION|Exercise QUESTION PAPER 4|91 Videos

  • MCQ's

    CHHAYA PUBLICATION|Exercise QUESTION PAPER 10|1 Videos

  • MCQ's

    CHHAYA PUBLICATION|Exercise QUESTION PAPER 9|66 Videos

  • MCQ ZONE 3

    CHHAYA PUBLICATION|Exercise Question Paper 8|30 Videos

  • Measures of Central Tendency

    CHHAYA PUBLICATION|Exercise Exercise 2 C Very short answer type question|18 Videos

Similar Questions

Explore conceptually related problems

The first three terms in the expansion of (1+a x)^n(n!=0) are 1,6x and 16 x^2dot Then find the value of a and ndot

The first three terms in the binomial expansion of (x+y)^n are 1,56 and 1372 respectively. Find the values of x and y.

Determine: nth term in the expansion of (x+1/x)^(2n)

The coefficient of the middle term in the expansion of (1+x)^(2n) is

The middle term in the expansion of (1-3x+3x^2-x^3)^(2n) is

If the three consecutive coefficients in the expansion of (1+x)^n are 28, 56, and 70, then the value of n is.

First three terms in the expansion of (x+a)^n are respectively 128, 2240 and 16800 The value of (a-x)^n is equal to

Coefficient of x^n in the expansion of (1+x)^(2n) is

If the middle term in the expansion of (x^2+1//x)^n is 924 x^6 , then find the value of ndot

If the coefficients of three consecutive terms in the expansion of (1+x)^n are in the ratio 1:7:42, then find the value of ndot

CHHAYA PUBLICATION-MCQ's-QUESTION PAPER 2
  1. The value of (2 ^(1/4). 4 ^(1/8)8^(1/16)...oo)is-

    Text Solution

    |

  2. If omega is a complex number such that omega ^(3) =1, then the value o...

    Text Solution

    |

  3. The first three terms in the expansion of (1+ ax) ^(n) are 1, 6x and ...

    Text Solution

    |

  4. A coin an a six faced die both unbiased are thrown simulaneously. The ...

    Text Solution

    |

  5. The sum of the series (1)/(sqrt1+sqrt2)+ (1)/(sqrt2+ sqrt3)+ ...+ (1)/...

    Text Solution

    |

  6. Solution set of the inequation 10 le -5 (x-2) lt 20 is-

    Text Solution

    |

  7. If the cube roots of unity are 1, omega, omega ^(2) then the roots of ...

    Text Solution

    |

  8. A point movs in such a manner that the sum of the squares of its dista...

    Text Solution

    |

  9. The length of the chord joining the points in which the straight line ...

    Text Solution

    |

  10. If p is the length of the perpendicular from the origin on the line wh...

    Text Solution

    |

  11. In three dimensional spaces, the perpendicular distance of the point p...

    Text Solution

    |

  12. If the circel x ^(2) +y^(2) +6x -2y +k=0 bisects the circumference of ...

    Text Solution

    |

  13. The lines 4x+4y =1,8x -3y =2 and y=0 are-

    Text Solution

    |

  14. If the distrance of a point on the ellipse 4x^(2) +9y^(2) =36 from its...

    Text Solution

    |

  15. Locus of centroid of the triangle whose vertices are (a cos t , a sin ...

    Text Solution

    |

  16. The image of the point (4, -3) with respect to the line x-y=0 is,

    Text Solution

    |

  17. A straight line through the origin O meets the parallel lines 4x +2y=9...

    Text Solution

    |

  18. If a+b+c=0, then the straight lines 4ax + 3by+c=0 always pass through ...

    Text Solution

    |

  19. In three dimensional space the equation of xy-plane is-

    Text Solution

    |

  20. If (x(i), (1)/(x(i)))(i =1,2,3,4) are the four distinct points on a ci...

    Text Solution

    |