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Given that n numbers of AMs are inserted...

Given that n numbers of AMs are inserted between two sets of numbers a, 2b and 2a, b where `a,binR`. 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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A, B
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