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Σn = ……………A) \(\frac{n(n+1)}{2}\)B) \(\frac{n(n-1)}{2}\)C) \(\frac{n}{2}\)D) \(\frac{n+1}{2}\) |
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Answer» Correct option is (A) \(\frac{n(n+1)}{2}\) \(\sum n\) = \(\frac{n(n+1)}{2}\) Correct option is A) \(\frac{n(n+1)}{2}\) |
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