It's alot like the History 25 guesses game. Someone tells a riddle, other's try and guess the answer to that riddle. You all get 10 guesses. Whoever guesses it right gets to tell a riddle for other's to guess, etc. If know one guesses the correct answer, the person who had posted the riddle wins. Therefore, they will tell us the answer and then tell another riddle for use to get. Pretty simple IMO, and pretty fun.
I'll go first. (It's really hard
Three friends check into a motel for the night and the clerk tells them the bill is $30, payable in advance. So, they each pay the clerk $10 and go to their room. A few minutes later, the clerk realizes he has made an error and overcharged the trio by $5. He asks the bellhop to return $5 to the 3 friends who had just checked in. The bellhop sees this as an opportunity to make $2 as he reasons that the three friends would have a tough time dividing $5 evenly among them; so he decides to tell them that the clerk made a mistake of only $3, giving a dollar back to each of the friends. He pockets the leftover $2 and goes home for the day! Now, each of the three friends gets a dollar back, thus they each paid $9 for the room which is a total of $27 for the night. We know the bellhop pocketed $2 and adding that to the $27, you get $29, not $30 which was originally spent. Where did the other dollar go?