Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If S n = n 2 – 2n for an A.P. then T 5 of this A.P. is-
Text Solution
Verified by ExpertsThe correct answer is:
B
T n = S n –S n–1
T n = n 2 –2n – [(n –1) 2 –2 (n –1)]
= n 2 –2n – [n 2 –2n + 1 –2n + 2]
T n = 2n –3
T 5 = 2 × 5 – 3 = 7
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