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The sum of first 20 terms of the sequenc...

The sum of first 20 terms of the sequence 0.7, 0.77, 0.777, cdots, is

A

`(7)/(81) (179 -10^(-20)) `

B

`(7)/(9) ( 99-10^(-20))`

C

`(7)/(81) (179+10^(-20))`

D

`(7)/(9) (99+10^(-20))`

Text Solution

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The correct Answer is:
C
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