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Subsets
A set A is called a subset of set B if every element of A is also an element of B.
This relationship is denoted by A ⊆ B. For example, if A = {1, 2} and B = {1, 2, 3},
then A ⊆ B.
It's important to note that every set is a subset of itself, and the empty set is a
subset of every set. A proper subset is a subset that is not equal to the original
set.
1 Define Sets
Establish sets A and B
2 Check Elements
Verify if all elements of A are in B
3 Determine Relationship
Conclude if A is a subset of B
