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If the first three terms in the binomial...

If the first three terms in the binomial expansion of `(1+bx)^n` in ascending powers of x are 1,6x and `16x^2` respectively then b + n =

A

A) `28/3`

B

B) `15/2`

C

C) `29/3`

D

D) `17/3`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-BINOMIAL THEOREM-PRACTICE EXERCISE
  1. The middle term in the expansion of (x + 1/x)^(2n) is

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  2. If the first three terms in the binomial expansion of (1+bx)^n in asce...

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  3. If the first three terms in the expansion of (1 -ax)^n where n is a po...

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  4. In the expansion of ((x^2)/(2) - (2)/(x^2))^8, the third term from the...

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  5. The third term in the expansion of (1/x + x ^[log10 x])^5 is 10^6 then...

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  6. The numerically greatest term in the expansion (5x - 6y)^14 when x = 2...

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  7. The no. of terms in (x + sqrt(x^2 - 1))^6 + (x -sqrt(x^2 - 1))^6

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  8. No. of distinct terms in (x + y - z)^16 is

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  9. No. of distinct terms in (a+b+c+d)^n , n in N is

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  10. If the coefficient of (2r + 4)^(th) term and (r - 2)^(th) term in the ...

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  11. The number of integral terms in the expansion of (sqrt2 + root(4)(3))^...

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  12. The term independent of x in the expansion of (x^2-(1)/(x))^6 is

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  13. If 5th term of the expansion (root(3)(x) - 1/x)^n is independent of x ...

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  14. Term independent of x in (1+4x)^p (1+(1)/(4x) )^q is :

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  15. Term independent of x in (x - 1/x)^4 (x + 1/x)^3 is

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  16. The sum of the binomial coefficients of the 3rd, 4th terms from the be...

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  17. If the sum of odd terms and the sum of even terms in the expansion of ...

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  18. If the sum of odd terms and the sum of even terms in (x + a)^n are p a...

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  19. If A and B are coefficients of x^(n) in the expansion of (1+x)^(2n) an...

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  20. The coefficient of x^(-17) in (x^4 - (1)/(x^3))^15 is

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