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the pth, qth and oth terms of a G. P. be respectively a, b and cove that (V)())-1. |
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Answer» given, a = xyp-1, b = xyq-1and c = xyr-1 here, x is first term and y is common ratio as, G²= AH we ahve, b²=ac xyq-1 aq-r= xq-r* y(p-1)(q-r) br-p = xr-p* y(q-1)(r-p) cp-q= xp-q* y(p-q)(r-1) multiply all 3 of them, we get RHS, x⁰* y⁰= 1 henc proved. |
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