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Ex 1.3, 4 - Chapter 1 Class 11 Sets - Part 4

 

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Ex 1.3, 4 Write down all the subsets of the following sets: (iv) ϕ Let A = ϕ Number of elements in A is 0 Hence n = 0 Number of subsets of A = 2n = 20 = 1 Null set and the set itself are the subsets of the set. Here null set is the set itself. So, the only subset of ϕ is ϕ

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