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If `(p+q)t h` term of a G.P. is `a` and its `(p-q)t h` term is `b` where `a ,b` in `R^+`, then its pth term is (a).`sqrt((a^3)/b)` (b). `sqrt((b^3)/a)` (c). `sqrt(a b)` (d). none of these

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