Sheep, Wolf, And The River
Riddle: You have two sheep and one wolf, you need to get across a river but you can only take one animal at a time, but you cant leave a sheep with a wolf, and you have to take all three. How do you get across?
Answer: You take the wolf first then go back across and get a sheep you leave the sheep and take the wolf back across then take the other sheep over and then come back to get the wolf.
Source: https://www.riddles.com/index.php/6865
