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Find the sum of the series s = 1 + 12(1 + 2) + 13(1 + 2 + 3) + 14(1 + 2 + 3 + 4) + .........upto 40 terms. __ |
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Answer» Find the sum of the series s = 1 + 12(1 + 2) + 13(1 + 2 + 3) + 14(1 + 2 + 3 + 4) + .........upto 40 terms. |
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