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CBSE Class 10 Answered

  1. If Sn denotes the sum of n terms of an AP whose common difference is d and 1st term is a. Find Sn – 2Sn – 1 + Sn – 2 .
Asked by afreensyed13 | 02 Apr, 2017, 04:12: PM
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Answered by Rebecca Fernandes | 02 Apr, 2017, 09:28: PM
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