if in an AP (t11)2-(t1)2=1500 and (t11-t1)=30,then what is t11? Share with your friends Share 0 Manbar Singh answered this We have, t11 - t1 = 30 .....1Now, t112 - t12 = 1500⇒t11 - t1 t11 + t1 = 1500⇒30t11 + t1 = 1500⇒t11 + t1 = 50 .....2Adding 1 and 2, we get 2t11 = 80⇒t11 = 802 = 40 1 View Full Answer