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Let Sn denote the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d=Sn−k Sn−1+Sn−2, then k = |
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Answer» Let Sn denote the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d=Sn−k Sn−1+Sn−2, then k = |
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