Telephonic Interview consisted of basic maths and reasoning questions. 4 questions asked. 1) Find the area of a regular hexagon of unit side. 2) Given a sequence : 2,4,8,16,..... some last number, find the sum of the series. (Geometric Progression) 3) Given three points find the equation of the circle passing through them. 4) Last problem was on reasoning and needed venn-diagram application.