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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Ujjawal vishal
cardinality of a power set P(A) of Set A = 2^n , where n is the no. of elements in set. If A is null set, then n=0 then cardinality of P(A)= 2^0=1 So, the minimum cardinality of power set is 1.