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If T(r +1) is the first negative term in...

If `T_(r +1)` is the first negative term in the expansion of `(1+x)^(7//2)` then r =

A

5

B

6

C

7

D

4

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-BINOMIAL THEOREM-EXERCISE - II
  1. Find the coefficient of x^(10) in the expansion of (1+2x)/((1-2x)^(2))...

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  2. The first negative term in the expansion of (1+x)^(3//4) is

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  3. If T(r +1) is the first negative term in the expansion of (1+x)^(7//2)...

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  4. If x^3, x^4, x^5 …….can be neglected then sqrt(x^2 + 16 ) - sqrt(x^2 +...

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  5. If 'c' is small in comparison with l then ((l)/(l+c))^(1//2) + ((l)/(l...

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  6. If x is numerically so small so that x^2 and higher powers of x can be...

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  7. If x is small so that x^2 and higher powers can be neglected, then the...

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  8. 1+(2)/(4) + (2.5)/(4.8)+(2.5.8)/(4.8.12)+(2.5.8.11)/(4.8.12.16)+…..=

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  9. (3)/(4.8)+(3.5)/(4.8.12)+(3.5.7)/(4.8.12.16)+….=

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  10. Observe the following statements : Statement -I : In the expansion...

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  11. The following coefficients which are in increasing order are :

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  12. Observe the following statements : Statement - I : 1/2 . ""^10C0 -...

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  13. The number of terms in the expansions of (1+3x+3x^2+x^3)^6, (x+y-z)^16...

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  14. (1+x)^n = sum(r = 0)^(n) Cr x^r then match the following

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  15. (1+x)^n = sum(r = 0)^(n) Cr x^r then match the following

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  16. Assertion (A): In the expansion of (1+x)^n, three consecutive terms a...

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  17. Assertion (A) : In the (1+x)^50, the sum of the coefficients of odd po...

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  18. If ab ne 0 and the sum of the coefficient of x^7 and x^4 in the expans...

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  19. Coefficient of x^3y^4z^2 in (2x-3y+4z)^9 is

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  20. Coefficient of x^18 in (x^2 + 1)(x^2 + 4)(x^2 + 9)….(x^2 + 100) is

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