The coefficient of n^(-r) in the expansi...

The coefficient of `n^(-r)` in the expansion of `log_(10)((n)/(n-1))` is

`(1)/(rlog_(e)10)`

`-(1)/(rlog_(e)10)`

`-(1)/(r!log_(e)10)`

None of these

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EXPONENTIAL AND LOGARITHMIC SERIES
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