1)If the sum of n-consecutive terms in a Arithmetic Progression is Sn, then show that,
\sf{s _{n + 3} - 3S _{n + 2} + 3S _{n - 1} - S_{n}=0}sn+3−3Sn+2+3Sn−1−Sn=0
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hyy it's inappropriate
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sorry aayati i can't help but i will try it if it get the answer i will message you
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