किसी गुणोत्तर श्रेढ़ी के n,2n तथा 3n पदों...

किसी गुणोत्तर श्रेढ़ी के n,2n तथा 3n पदों के योगफल क्रमशः `S_(1),S_(2)` तथा `S_(3)` है तो सिद्ध कीजिये- `S_(1)(S_(3)-S_(2))=(S_(2)-S_(1))^(2)`

लिखित उत्तर

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The correct Answer is:

`(S_(2)-S_(1))^(2)`

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