JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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Application +4 | -1

S_n=n P+\frac{n}{2}(n-1) Q

, where

S_n

denotes the sum of first

n

terms of an AP, then the common difference is

View answer and explanation

Correct option: D

Q

Option D (

Q

) is correct because the common difference in an AP is the coefficient of the

\frac{{n}}{{2}}(n-1)

term in the sum formula.

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