Don't you think? / Don't you think so? / Don't you think that so?

[prattsishunk]

Hey,
which outta the 3 is correct?

Don't you think?

OR

Don't you think so?

OR

Don't you think that so?

 

[English Freak]

"Don't you think so?" is correct.
For exmaple: It's very strange. Don't you think so?

 

[Hedwig]

What is outta, Prattsishunk? I suppose you mean which of the three is correct?

The third one is wrong. The other two are fine, I think.

Not a teacher