In the context of JEE Main, "combinations" refer to the mathematical concept of selecting items from a set where the order of selection doesn't matter. The key formula is nCr = n! / (r! * (n-r)!),...
Conic sections, in the context of JEE (Joint Entrance Examination), are curves formed by the intersection of a plane and a double-napped right circular cone. These curves, namely circles, parabolas, ellipses,...