A building is being prepared for opening. People are decorating the building with 12 flags. At first they arrange the flags 4 to a side, as shown, but then they see that the flags can be arranged 5 to a side using only 12 flags. How?
Picture Riddles
Matchstick Maths
Below is a little math equation, made of matchsticks, that does not add up. Can you move just one match stick and fix the equation?
Crack the Code
Can you crack the unlock code for the lock using the 5 clues below?
- Clue #1:
682– One number is correct and well placed - Clue #2:
614– One number is correct but wrongly placed - Clue #3:
206– Two numbers are correct but both are wrongly placed - Clue #4:
738– None of the numbers are correct - Clue #5:
780– One number is correct but wrongly placed
Counting Squares
Old 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 Answer