You walk into a dark room in which 100 coins are scattered around on the floor. 10 of them are heads up, 90 are tails up.
You cannot feel, see or in any other way find out on which side the coins are. How can you split the coins into two piles such that there are the same number of heads in each pile?
Riddle AnswerAn engineer goes to a bank with a check of $200 and asks the cashier “Give me some one-dollar bills, ten times as many twos and the balance in fives!”
What will the cashier do?
Riddle AnswerIf two painters can complete two rooms in two hours, how many painters would it take to do 18 rooms in 6 hours?
Riddle AnswerThere are 21 barrels of wine with a farmer. 7 are full, 7 are half full and 7 are empty. He wishes to divide them among his three sons such that each son has the same number of full barrels, the same number of half full barrels, and the same number of empty barrels. Note that there are no measuring devices handy. How can the barrels and wine be evenly divided?
Riddle AnswerIf you see a reflection of an analogue clock which shows 2:30, what will be the original time?
Riddle Answer