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If S1 be the sum of (2n + 1) terms of an A.P. and S2 be the sum of its odd terms, then prove that S1:S2=(2n+1):(n+1).

Answer» If S1 be the sum of (2n + 1) terms of an A.P. and S2 be the sum of its odd terms, then prove that S1:S2=(2n+1):(n+1).


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