Is Carly's citizenship true?

1.

If the first two statements are true, is the third statement true?
Carly has dual citizenship
Carly has Canadian citizenship.
Carly has American and Canadian citizenship

It is not true. It doesn’t explain what other citizenship it is.

Answer:

The answer is yes.

Explanation:

If Carly has dual citizenship, and it's already mentioned that she has Canadian citizenship, then the third statement is true because it provides the second citizenship (an American one). To break it down, in order for the first statement to be true "Carly has dual citizenship" then both statements 2 and 3 are true. In order to have dual citizenship (which means two citizenships), then statement 3 of "Carly has American and Canadian citizenship" must be true.