13. If the sum of n terms of an A.P. is 3n 2 + 5n and its mth term is 164, find the value of m 13. If the sum of n terms of an A.P. is 3n 2 + 5n and its mth term is 164 Find the value of m October 27, 2021 Category: Chapter 9 - Sequences and Series , Maths , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related