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# Explain the complement of a set in simple words? It is really getting hard for me !!

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In set theory, the complement of A means, the elements which are not present in A. It is denoted by A'
For example-
Let say, A = {$x \in N$ $|$ $N$= natural number}
So, complement of A  = A' = {0 $|$$x\notin N$}

Here A = 2, 4, 6
And A' (complement of A) = elements which are not present in A  = 1, 3, 5

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