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[" (c) "10000],[" 11.The sum of "25" ter...

[" (c) "10000],[" 11.The sum of "25" terms of an A.P.,whose all the terms are "],[" natural numbers,lies between "1900" and "2000" and its "9^(" th ")],[" term is "55." Then the first term of the A.P.is "]

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