1.

If `"log"_(ax)x, "log"_(bx) x, "log"_(cx)x` are in H.P., where a, b, c, x belong to `(1, oo)`, then a, b, c are inA. A.PB. G.PC. H.PD. none of these

Answer» Correct Answer - B
We have,
`"log"_(ax) x, "log"_(bx) x, "log"_(cx)x` in H.P.
`rArr "log"_(x)ax,"log"_(x)bx, "log"_(x)`cx are in A.P.
`rArr "log"_(x)a + 1, "log"_(x)b+1, "log"_(x)c+1` are in A.P.
`rArr "log"_(x)a, "log"_(x) b, "log"_(x) "c are in A.P " rArr` a, b, c are in G.P


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