Question

If A={x/(x-1)(x-2)=0}, then n(p(A)) =
a) 1
b)2
c) 4
d) 8​

Answer 1

Answer:

The formula for finding power set is

..if A is a set with n(A) = m then

n{P(A)} = 2^m.

Here m=2 then n{P(A)}= 2^2 = 2×2=4.