Subset

Set A is said to be a subset of a set B, if and only if each element of A is an element of B.

It is denoted by A ⊆ B

Super Set

If a set A is a subset of set B then set B is a super set of set A.

It is denoted by B ⊇ A

Example:

If A = {1, 2, 4} and B = {1, 2, 3, 4, 5} then A ⊆ B (because each element of A is also an element of B) and B ⊇ A.

Subset

 Remember that

A ⊄ B means that A is not a subset of B.

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