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Find the sum of 7 terms of the sequence ...

Find the sum of 7 terms of the sequence `(1/5+2/(5^2)+3/(5^3)),\ (1/(5^4)+2/(5^5)+3/(5^6)),\ (1/(5^7)+2/(5^8)+3/(5^9)),\ ,`

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RD SHARMA ENGLISH-GEOMETRIC PROGRESSIONS-All Questions
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