3. Let the sum of n, 2n, 3n terms of an A.P. be S1, S2 and S3, respectively, show that S3 = 3(S2 – S1 ) 2n 3. Let the sum of n 3n terms of an A.P. be S1 respectively S2 and S3 show that S3 = 3(S2 – S1 ) October 27, 2021 Category: Chapter 9 - Sequences and Series , Maths , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
