The sum to 2 n terms of the series 53-4 - 63-73-4 - 83-93- is -

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The sum to 2 ...

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The sum to 2n terms of the series $5^{3} + 4 \times 6^{3} + 7^{3} + 4 \times 8^{3} + 9^{3} . . . . .$ is ?

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The sum to 2n terms of the series - $5^{3} + 4 \times 6^{3} + 7^{3} + 4 \times 8^{3} + 9^{3}$ ....is?

5^{3} + {4.6}^{3} + 7^{3} + 7^{3} + {4.8}^{3} + 9^{3} + {4.10}^{3} + . . . .

11^{3} - 10^{3} + 9^{3} - 8^{3} + 7^{3} - 6^{3} + 5^{3} - 2^{3} + 1^{3} =

(3^{3} - 2^{3}) + (5^{3} - 4^{3}) + (7^{3} - 6^{3}) + . . . . . .

10

n

1^{3} + 3^{3} + 5^{3} + 7^{3} + . . . .

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