The product is : Single user ::Operating System: XP, Vista, Window 7 & above version.:: Video lectures can be played on Computer or Laptop only. :: Validity of the product : 1 year :: Course details : –Basic Algebra Problem Solving Session-1–Basics of Algebra Session-1–Basics of Algebra Session-2–Problems on Circles–Problems on Triangles–SSC-Problem Solving Session-1–Trigonometry Session-1–Trigonometry Session-2–Trigonometry Session-3–Trigonometry Session-4–SSC-CGL-2013 Session-1–SSC-CGL-2013 Session-2–SSC-CGL-2013 Session-3–SSC-CGL-2013 Session-4–SSC-CGL-2013 Session-5–Geometry Workshop-Trepezium-1–Geometry Workshop-Trepezium-2–Geometry Workshop-Triangles-Quadrilaterals-1–Geometry-Circles-Triangles-2–Area -Ratio-1–Geometry Session-1–Geometry-2–Polygon inside polygon–Geometry Workshop-5–Geometry Workshop-6–Geometry Workshop-7–Geometry workshop-9–SSC-CGL-2014-tier-1-session-1–SSC-CGL-2014-tier-1-session-2–SSC-CGL-2014-tier-1-session-3