if the sum of n terms of the two A.p's are in the ratio of 3n+5/5n+7, then their nth terms of in the ratio of:
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In the ratio 3n + 5 : 5n + 7, if you put the value of n as 2n - 1, then you'll get the ratio of nth terms. So this is the answer. So remember this that, if the ratio of sums of two APs are in the ratio an + b : cn + d, then put the value of n as 2k - 1 to find the ratio of kth terms.
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