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the sum3/1^2+5/(1^2+2^2)+7/(1^2+2^2+3^2)...

the sum`3/1^2+5/(1^2+2^2)+7/(1^2+2^2+3^2)+.......` upto 11 terms

A

`(7)/(2)`

B

`(11)/(4)`

C

`(11)/(2)`

D

`(60)/(11)`

Text Solution

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The correct Answer is:
C
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DISHA PUBLICATION-SEQUENCES AND SERIES -EXERCISE -1 : Concept Builder
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  15. If the sum to infinty of the series , 1+4x+7x^(2)+10x^(3)+…., is (35)/...

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  16. the sum3/1^2+5/(1^2+2^2)+7/(1^2+2^2+3^2)+....... upto 11 terms

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  19. Let H(n)=1+(1)/(2)+(1)/(3)+ . . . . .+(1)/(n), then the sum to n terms...

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  20. For a positive integer n let a(n)=1+1/2+1/3+1/4+1/((2^n)-1)dot Then a(...

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