Ask iit jee aieee pet cbse icse state board community Discussion Response Post to: prove it[sequences and series]
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Mirka (2910)

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aftre step 3 in place of 13 u can also take 7

point is its ( the term in step 4 after first multiplication symbol)

of d form of sum of a GP whose common ratio is 1013... n has 7 terms

 

 


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