Three men checked into a hotel. The clerk charged them 30 dollars which they paid. Upon checking the rates the clerk realized that he should have charged them 25 dollars. The clerk gave the bellhop 5 dollars and told him to return it to the three men.

The bellhop thought to himself, "how are those three men going to divide 5 dollars. I'll give them three (one for each) and I'll keep two. No one will be the wiser." He did exactly that.

Now the three men paid 27 for the room ( 30 minus the 3 = 27). The bellhop keep 2.

27 + 2 = 29 dollars. Where is the missing dollar?