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Compute the sum of first n terms of the ...

Compute the sum of first n terms of the following series :
8 + 88 + 888 + 8888 ____

Text Solution

Verified by Experts

The correct Answer is:
(i) `=(80)/(81)(10^(n)-1)-(8n)/(9)`
(ii) `= (6)/(81)[10(10^(n)-1)-9n]`
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