1−3nn+1
3n+1n+1
3n+1n−1
3n−1n+1
Correct answer is B
Using Tn = 3n+1n+1,
T1 = 3(1)+1(1)+1=42
T2 = 3(2)+1(2)+1=73
T3 = 3(3)+1(3)+1=104
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