A man has two paper cubes on his desk. Every day he arranges both cubes so that the front faces show the current day of the month. What numbers are required on the faces of the cubes to allow this for all possible days in the calendar?
Riddle AnswerHard Riddles
Pressure Cooker for Profit
A friend of mine bought a used pressure cooker for $60. She somehow did not find it useful and so when a friend of hers offered her $70, she sold it to her. However, she felt bad after selling it and decided to buy it back from her friend by offering her $80. After having bought it once again, she felt that she did not really need the cooker. So she sold it at the auction for $90.
How much profit did she make? Did she at all make any profit?
Riddle AnswerWholesale Merchant
A wholesale merchant came to me one day and posed this problem. Every day in his business he has to weigh amounts from one pound to one hundred and twenty-one pounds, to the nearest pound. To do this, what is the minimum number of weights he needs and how heavy should each weight be?
Riddle AnswerOld Auto
An old auto is to drive a stretch of 2 miles, up and down a hill. Because the auto is so old, you cannot drive the first mile (the ascent) faster than 15 miles per hour.
How fast do you have to drive the second mile (going down the hill) in order to get an average speed of 30 miles per hour?
Riddle AnswerSum of Hats Puzzle
There are 3 people Abel, Bill and Clark. Three of them have numbers (positive integers) written on their hats. They can see the numbers on the other two hats but not their own. The number on one hat is the sum of the numbers on the other two hats. They are given this information and asked in turn if they can identify their number.
In the first round Abel, Bill and Clark each in turn say they don’t know. In the second round Abel is first to go and states his number is 50. What numbers are on Bill and Clark?
Riddle Answer