three guys go to a hotel,the desk clerk says it will be 30.00 dollars,they each pay with 10.00 dollars,later the clerk remembers that the room was only 25.00,so he sends the bell hop up to the room with five dollars,he thinks for a moment on the way up,and says to himself,how can i split five dollars between three people,so he puts two dollars in his pocket,and gives the three guys a dollar back,ok,they each payed 9.00 dollars now,so three times 9 = 27,and the two in his pocket= 29,where did the other dollar go