Question # If ( A={1, B}, ) where ( B={2,3} . ) Then, ( P(A) ) is equal to

# If ( A={1, B}, ) where ( B={2,3} . ) Then, ( P(A) ) is equal to

(a) ( {{1},{B},{1, B}} )

(b) ( {phi,{1},{B},{1, B}} )

(c) ( {phi,{1},{B}} )

(d) None of these

Solution

( A={1, B} )

Number of elements in ( P(A)=2^{2}=4 )

( P(A)={phi,{1},{B},{1, B}} )

Option ( B ).