- #1

Bashyboy

- 1,421

- 5

## Homework Statement

P(P(∅))

## Homework Equations

## The Attempt at a Solution

I did the inner power set first: {{∅}, ∅}

Then I took the power set of that: {{{∅}}, {∅}, {{∅}, ∅}, ∅}

But according to the answer, there is only two elements.