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If `x_1,x_2,x_3,...` are positive numbers in G.P then `logx_n, logx_(n+1), logx_(n+2)` are inA. A.PB. G.PC. H.PD. none of these |
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Answer» Correct Answer - A We have, `x_(n), x_(n+1), x_(n+2)` in G.P. `rArr x_(n+1)^(2) = x_(n)x_(n+2)` `rArr 2"log"x_(n+1) = "log"x_(n) + "log"x_(n+2)` `rArr "log"x_(n), "log"x_(n+1), "log"x_(n+2)` are in A.P. |
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