Published by:
CGP EDU Academic Team
Published on: August 13, 2026
If S n denotes the sum of n terms of an A.P., then S n+3 –
3S n+2 + 3S n+1 – S n =
A
0
B
l
C
D
2
Text Solution
Verified by ExpertsThe correct answer is:
A
S n+3 – 3S n+2 – 3S n+1 – S n
= (S n+3 – S n+2 ) –2(S n+2 – S n–1 ) + (S n+1 – S n )
= T n+3 – 2T n+2 + T n+1
= (T n+3 – T n+2 ) – (T n+2 – T n+1 )
= d – d = 0.
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