"Er ist zwölf, nicht?"

[sweilan1]

Isn't he twelve --- should be acceptable.

[myra]

Thanks. That's added now.

[goaliek]

Why does this me he ist twelve, yes? as well as he is twelve, no?

[luis.oliveira]

I accidentally wrote "Er isst zwolf, nicht?" as in "He eats twelve, no?", which doesn't make much sense unless on a specific context, yet it marked as correct. I believe I should've lost an heart there. Please correct for others.

[HBreunig]

"he is twelve, not?" this should not be a correct answer. If you had it in a sentence, like "he is twelve, not three right?", for example, it would work.

[arrowgun99]

Because, ''He is twelve, not?'', isn't something you'd ever hear in English. It is in German, though.

[Ladadadada]

It may be, but it doesn't make any sense to choose a "translation" in English that is not grammatically correct.

[Rasute]

I wrote "He is twelve, isn't he?" that sounds better to me than "he is twelve, not?"and it was marked as correct.

[DanceIsBreath]

What is the difference between "no" and "not" in the end? Both should be acceptable...