Question
Write down all possible subset of the set given below : $\{a, b, c, d\}$
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Answer
$\begin{array}{l}\phi,\{a\},\{b\},\{c\},\{d\},\{a, b\},\{a, c\},\{a, d\},\{b, c\},\{b, d\},\{c, d\}, \\ \{a, b, c\},\{a, b, d\},\{a, c, d\},\{b, c, d\},\{a, b, c, d\}\end{array}$
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