If the sum to \( n \) terms of an A.P. is \( 3 n^{2}+5 n \), while ... VIDEO
If the sum to \( n \) terms of an A.P. is \( 3 n^{2}+5 n \), while \( T_{m}=164 \), then value of \( m \) is
(a) 25
(b) 26
(c) 27
(d) 28
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