Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Let = 
, n ∈ N, then
A
(n + 1) Ι n + (n – 1) Ι n–2 = 
n ≥ 3
n ≥ 3
B
(n + 1) Ι n + (n – 1) Ι n–2 = 
n ≥ 3
n ≥ 3
C
(n + 1) Ι n – (n – 1) Ι n–2 = 
n ≥ 3
n ≥ 3
D
(n + 1) Ι n – (n – 1) Ι n–2 = 
n ≥ 3
n ≥ 3
Text Solution
Verified by ExpertsThe correct answer is:
B
Ι n = 
⇒ (n + 1) Ι n = 
Similary (n – 1) Ι n–2 = 
⇒ (n + 1) Ι n + (n – 1) Ι n–2 = 
= 
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