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Find the sum up to n terms of the series...

Find the sum up to n terms of the series : `1+(6)/(7)+(11)/(49)+(16)/(343)+….`

Text Solution

Verified by Experts

The correct Answer is:
`(7^(n)-5n+4)/(7^(n-1)6)+(5(7^(n-1)-1))/(7^(n-2)36)`
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