Question

How many elements has P(A), if A = Φ?​

Answer 1

Answer:

We know that if A is a set with m elements i.e., n(A)=m,

then, n[P(A)]=2

m

.

If A=ϕ, then n(A)=0

∴n[P(A)]=2

o

=1

Hence, P(A) has one element.

Step-by-step explanation:

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