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If A is {{Φ}, {Φ, {Φ}}}, then the power set of A has how many element?(a) 2(b) 4(c) 6(d) 8This question was posed to me in an interview for internship.This intriguing question comes from Set Operations topic in chapter Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

Answer»

Right OPTION is (b) 4

The best EXPLANATION: The set A has GOT 2 elements so n(P(A))=4.



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