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  4. The relation is subset of the power set P(A) of a set A is

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Q. The relation is subset of the power set P(A) of a set A is

Relations and Functions - Part 2

Solution:

The relation is not symmetric, because $A \subset B$ does not imply that $B \subset A$ . But it is antisymmetric because
$A \subset B$ and $B \subset A$
$\Rightarrow \, A = B $