When the postman arrived at the Smith home to deliver mail through a slot in the front door, he was surprised to find the Smiths had acquired a vicious dog. The dog was fastened to a tree by a chain just long enough to reach the front door. The dog growled and bared its teeth.
How did the clever postman outwit the dog and reach the door safely?
Riddle AnswerYou have three jars which hold 19, 13 and 7 liters of water respectively. The 13 and 7 liter jars are full of water and the 19 liter jar is empty, so there’s a total of 20 liters of water.
Using only the 3 jars, how can you get 2 jars with 10 liters of water each?
Riddle AnswerSusan and Lisa decided to play tennis against each other. They bet $1 on each game they played. Susan won three bets and Lisa won $5. How many games did they play?
Riddle AnswerYou have unlimited supply of 1¢, 5¢, 10¢, 25¢ and 50¢ (penny, nickel, dime, quarter, half-dollar respectively) coins. What is the fewest number of coins required to have an exact change for all possible items that cost from one cent up to and including one dollar in one-cent increments?
Riddle Answer