Suppose you are travelling in a train. There are only 4 other people in your berth. They are named 1, 2, 3 and 4 . Your wallet is stolen. Assume that the wallet was stolen by one of these 4 people and that only 3 of them lie.
Here are their statements:
1: 2 stole the wallet.
2: 3 didn't steal.
3: I didn't steal.
4: 3 stole your wallet.
Who actually stole your wallet?