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If y = (1)/(3) + (1*3)/(3 *6) + (1 * 3*...

If ` y = (1)/(3) + (1*3)/(3 *6) + (1 * 3*5)/(3*6*9) +…` then the value of `y^(2) + 2y ` is `
` `a. 2 b.-2 c. 0 d`. None of these

A

2

B

-2

C

0

D

none of these

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The correct Answer is:
A
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OBJECTIVE RD SHARMA ENGLISH-BINOMIAL THEOREM AND ITS APPLCIATIONS -Exercise
  1. If p is nearly equal to q and n gt 1 , such that ((n+1) p+(n-1)q)/(...

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  2. If y=3 x + 6 x^(2) + 10 x^(3) +… then x =

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  3. If y = (1)/(3) + (1*3)/(3 *6) + (1 * 3*5)/(3*6*9) +… then the value ...

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  4. If (1+2x+x^2)^n=sum(r=0)^(2n)ar x^r ,then ar is a.(.^nC2)^2 b. .^n ...

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  5. In the expansion of (sqrt(x^5)+3/(sqrt(x^3)))^6 coefficient of x^3 is ...

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  6. Find the number of nonzero terms in the expansion of (1+3sqrt(2)x)^9+(...

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  7. The coefficient of y in the expansion of (y^(2) + c//y)^(5) is

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  8. The greatest coefficient in the expansion of (1 + x)^(10), is

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  9. The approximate value of (7.995)^(1//3) correct to four decimal pla...

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  10. Find the remainder when 32^(32^32) is divided by 7

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  11. If x^m occurs in the expansion (x+1//x^2)^(2n) , then the coefficient ...

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  12. If n gt 1, then (1+x)^(n)-nx-1 is divisible by :

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  13. The number of terms with integral coefficients in the expansion of (...

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  14. The term independent of x in the expansion of (1 - x)^(2) (x + (1)/(...

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  15. The range of the values of term independent of x in the expansion of (...

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  16. If the sum of the coefficients in the expansion of (alpha x^(2 ) -2...

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  17. If the coefficients of r^(th) and (r+1)^(th)terms in expansion of (3+7...

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

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  19. about to only mathematics

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  20. If n > 3, then x y C0-(x-1)(y-1)C1+(x-2)(y-2)C2-(x-3)(y-3)C3+...........

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