For AP, Sn-2n-1+Sn-2 = ...... (n>2),select a proper option (a), (b), (c) or (d) from given options so that the statement becomes correct.(All the problems refer to A.P.)
(a) 2d
(b) d
(c) a
(d) a+d
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answer is d a plus d
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Step-by-step explanation:
option d is correct answer
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