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Find the sum of the following series: 5+...

Find the sum of the following series: `5+55+555+ to\ n\ t e r m sdot`

A

`(5)/(9)[(10)/(9)(1-10^(n))-1]`

B

`(5)/(9)[(10)/(9)(10^(n)-1)-n]`

C

`(5)/(9)[(1)/(9)(1-10^(n))-10_(n)]`

D

none of these

Text Solution

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The correct Answer is:
B
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MARVEL PUBLICATION-SEQUENCES AND SERIES -MULTIPLE CHOICE QUESTIONS
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  2. sum(r=1)^(10) (4r-3)^(2) =

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  3. Find the sum of the following series: 5+55+555+ to\ n\ t e r m sdot

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  4. 1.2+3.02+5.002+7.0002+ cdots to n terms =

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  5. 1^(3)+2^(3)+3^(3)+ cdots +20^(3)=

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