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Find the sum of first n terms of the ser...

Find the sum of first n terms of the series ` 1^(3) + 3^(3) + 5^(3) +…`

A

`n^(2) (2n^(2) - 1)`

B

`2n^(4) + 3n`

C

`n(n - 1)`

D

none of these

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The correct Answer is:
A
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ML KHANNA-PROGRESSIONS -SELF ASSESSMENT TEST
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  3. The harmonic mean of (a)/(1 - ab) and (a)/(1 + ab) is

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  9. The value of underset(i=1)overset(n)sumunderset(j=1)overset(i)sumunde...

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  11. For any integer n ge 1, the sum sum(k=1)^(n) k (k + 2) is equal to

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  12. Find the sum of first n terms of the series 1^(3) + 3^(3) + 5^(3) +…

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  13. If the sum of first n terms of an AP is cn^(2), then the sum of square...

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  15. If 100 times the 100th term of an AP with non-zero common difference e...

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  16. Let a(1),a(2),a(3), . . . be a harmonic progression with a(1)=5anda(20...

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  17. Let a1, a2, a3, ,a(100) be an arithmetic progression with a1=3a n dsp...

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  18. Let S(k), where k = 1,2,....,100, denotes the sum of the infinite geom...

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