Write down all possible proper subsets of the set {1,{2,3}}.

1.	Write down all possible proper subsets of the set {1,{2,3}}.
Answer» The proper subsets are given by {1}, {2}, {3}, {1, 2}, {2,3}, {1, 3}.<br>Because 2,3 are also a set itself So 2 and 3come in double brackets<br>Sia it is wrong answer sis<br>1,2,3

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