Why is a river so rich ?
Rob is taller than Edwin, and Jurgen is shorter than Rob. Of only one of the following statements, we now certainly know it is correct: A.Edwin is taller than Jurgen B.Jurgen is taller than Edwin C.It cannot be determined if Jurgen or Edwin is the tallest.
Can you move 2 matchsticks to form four equal sized squares.
There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?
A quarter is one-fourth of a dollar but Mr. John has changed the equation as below : DOLLAR * 4 = QUARTER Can you replace each letter with a digit to make the above solution correct?
What is the next number in the series? 15 29 56 108 208 ?
What is the difference between a jeweller and a jailer?
What is the centre of gravity?
Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal? Note: 9 cannot be turned over to make it 6.
A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?
If nine thousand, nine hundred nine dollars is written as $9,909, how should twelve thousand, twelve hundred twelve dollars be written?
The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.
