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Given that n numbers of A.Ms are inserte...

Given that n numbers of A.Ms are inserted between two sets of numbers a, 2b and 2a, b where `a, b, in R`. Suppose further that the `m^(th)` means between these sets of numbers are same, then the ratio `a: b` equals

A

`n-m+ 1: m`

B

`n-m+ 1:n`

C

`n: n-m+1`

D

`m: n-m + 1`

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