Q10 of 145 Page 15

If A = ϕ then find n{P(A)}.

We have, A = ϕ , i.e. A is a null set.


Then, n(A)= 0


∴ n{P(A)} = 2m , where m = n(A)


⇒ n{P(A)} = 20 = 1.


Thus, P(A) has one element.


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