Question 1191487
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https://www.toppr.com/ask/question/the-ratio-of-the-sums-of-m-and-n-terms-of-an-ap-is-m2n2/


https://www.teachoo.com/2494/618/Ex-9.2--12---Ratio-of-sums-of-m--n-terms-of-AP-is-m2--n2/category/Ex-9.2/