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Suppose that all the terms of an arithmetic progression (A.P.) are natural numbers. If the ratio of the sum of the first seven terms to the first eleven terms is 6:11 and the seventh term lies in between 130 and 140, then the common difference of this A.P. is |
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Answer» Suppose that all the terms of an arithmetic progression (A.P.) are natural numbers. If the ratio of the sum of the first seven terms to the first eleven terms is 6:11 and the seventh term lies in between 130 and 140, then the common difference of this A.P. is |
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