Why?
A woman lives in a skyscraper thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?
Click here for the solution
She lives on the 27th floor. The elevator came down from the 36th to the 28th floor – 9 floors; or it came up from the 1st to the 27th floor – 27 floors. Therefore there is a 3 to 1 chance of it going up rather than down.
more riddles
On what day and date?
Debbie promised to take her daughter Becky shopping on the day before the fourth day after the day after tomorrow. If today is Sunday the 3rd. On what day and date will Becky take Debbie shopping?There is no way to know when Becky will take Debbie shopping....
How long would it take him?
A cyclist rode a mile in three minutes with the wind, and returned in four minutes against the wind. Assuming that he always applies the same force to the pedals, how long would it take him to cycle a mile on a windless day?If he can cycle a mile in three...
Who is the subject of the painting?
A man, looking at a painting, says to himself: "Brothers and sisters have I none, but that man's father is my father's son." Who is the subject of the painting?The mans own son.more riddlesDonec rutrum congue leo eget...