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Write down number of all possible subset...

Write down number of all possible subsets of `A={1,{2,3}}`.

Text Solution

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Here, A contains two elements , namely 1 and `{2, 3}`.
Let ` {2,3} =B, then A ={1,B}`.
`therefore P(A) ={phi, {1}, {B}, { 1, B}}`.
`rArr P(A) ={phi, {1}, {{2,3}} , {1,{2,3}}}`.
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