. The sum of the first three terms of an increasing `G.P.` is `21 `and the sum of the their s...
34 views · Published 12 October 2018 · 6:22 · Indexed 23 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW . The sum of the first three terms of an increasing `G.P.` is `21 `and the sum of the their squaresis `189.` Then sum of its first `n` terms is
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