Here's the question you clicked on:
No-data
Let the set T be \(T:=\{1,2,\{1,2\}\}\). Is this true: \[T-\wp T=\wp T - T\]
Sorry, I thought I would be an interesting question but I just saw that is an easy one.
\[ T - \mathcal P(T) \]Will give you \[ \{1, 2\} \]
Yeah and the other side is \(\{\emptyset, \{1\},\{2\}\}\)
Yet \[ \mathcal P(T) - T \]Will get you a bunch of sets.
@No-data It's gonna be a lot bigger than that.
My bad, you're right it has to be 7 elements.
\[ |T| = 3 \\ |\mathcal P(T)| = 2^{|T|} = 2^3 = 8 \]You only gonna be taking out \(\{1,2\}\) so it should be 7 elements.
Maybe I should take a rest lol.