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The ratio of the sum of n terms of two A...

The ratio of the sum of n terms of two A.P.'s be `5(2n+1):(97-2n)`. Find (i) the ratio of their nth terms. Hence, find the ratio of their 16th terms. (ii) If first term and common difference of first A.P. are 3 and 4 respectively, find the second A.P.

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