In an AP if a = 1, a„ = 20 and Sn = 399, then n is a„ = 20 and Sn = 399 In an AP if a = 1 then n is November 23, 2020 Category: Chapter 5 - Arithmetic Progressions , Maths , NCERT Class 10 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
