Question

For any two sets a and b prove that :p(a)=p(b)=a=b

Answer 1

let, a = {1,2,3}

b = {1,2,3}

p(a) =p(b) = a = b

{1,2,3}={1,2,3}={1,2,3}={1,2,3}...

hence proved//