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in Binomial Theorem, Sequences and Series by (49.1k points)
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If Sn denotes the sum of n terms of an AP whose common difference is d, the value of Sn - 2Sn - 1 + Sn - 2 is …

(a) d 

(b) 2d 

(c) 4d 

(d) d2

1 Answer

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Best answer

Answer is (a) d

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