Math MCQ - English
If a,d and Sn are first term, common difference and sum of first nth terms of se
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If a,d and Sn are first term, common difference and sum of first nth terms of series, then Sb =
n/2[2a+(n-1)d]
n/2[a+(n-1)d]
n/[2a+(n-1)d]
a+(n-1)d
Answer : A
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