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.

Remember that

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

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