In mathematics, especially in set theory, a setA is a subset of a set B, or equivalently B is a superset of A, if A is "contained" inside B, that is, all elements of A are also elements of B. A and B may coincide. The relationship of one set being a subset of another is called inclusion or sometimes containment.
A circle is a simple closed shape in Euclidean geometry. It is the set of all points in a plane that are at a given distance from a given point, the centre; equivalently it is the curve traced out by a point that moves so that its distance from a given point is constant. The distance between any of the points and the centre is called the radius.
Muhajir (also spelled "Mahajir" and "Mohajir") (, مهاجر) is an Arabic language-origin term used in Pakistan in some regions to describe Muslim immigrants and their descendants of multi-ethnic origin who migrated from regions of India and settled in the newly formed state of Pakistan after the Partition of India during the Independence of India and Pakistan from British Raj in 1947.
