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Truth and Lie Puzzle

There are two tribes on Mars, the Lie tribe and Truth Tribe. (Lie tribe always speaks lie, True tribe always speaks the truth.)

You meet three mars people and ask –

First Person: What tribe you belong to?

He replies with something in his language which you don’t understand.

Second person – He is saying that he belongs to Lie Tribe.

Third-person – Second person is lying.

What tribe does the third person belong to?

Solution : 

The trick is to start from the first person.

Let us assume that the first person is from the Truth tribe, then he will say that I am from the truth tribe. In this case, the second person is lying.

Now assume that the first person is from the Lie tribe, then also he will say that I belong to the truth tribe(as he is a liar). In this case, the second person is lying again.

Thus the third person is correct in both the scenarios, and he belongs to Truth Tribe.