In an AP if a = -7.2, d = 3.6, an = 7.2, then n is an = 7.2 d = 3.6 In an AP if a = -7.2 then n is November 23, 2020 Category: Chapter 5 - Arithmetic Progressions , Maths , NCERT Class 10 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related In Fig.7.2, two lines AB and CD intersect each other at the point O such that BC || DA and BC = DA. Show that O is the mid-point of both the line-segments AB and CD.Which of the following are APs? If they form an A.P. find the common difference d and write three more terms. −1.2,−3.2,−5.2,−7.2,From a certain apparatus, the diffusion rate of hydrogen has an average value of 28.7 cm^3 s−1. The diffusion of another gas under the same conditions is measured to have an average rate of 7.2 cm^3 s−1. The gas is