Q. 54.3( 87 Votes )

How many elements

Answer :

P(A) is the power set of set A.

Number of elemenst of P(A) = 2n

Where n is the number of elements of the set A.

Given A=ϕ

Then the numberv of elements of set A = 0

∴ Number of elements of P(A) = 2n

                                            = 20

                                            = 1

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