The sum of the series \[3+33+333+...+n\] terms is [RPET 2000]

1.	The sum of the series \[3+33+333+...+n\] terms is [RPET 2000]
A.	\[\frac{1}{27}({{10}^{n+1}}+9n-28)\]
B.	\[\frac{1}{27}({{10}^{n+1}}-9n-10)\]
C.	\[\frac{1}{27}({{10}^{n+1}}+10n-9)\]
D.	None of these
Answer» C. \[\frac{1}{27}({{10}^{n+1}}+10n-9)\]

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The sum of the series \[3+33+333+...+n\] terms is [RPET 2000]

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