If it took eight men ten hours to build a wall, how long would it take four men to build it?
If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?
What is in seasons, seconds, centuries and minutes but not in decades, years or days?
A boy and a girl are sitting on the porch. "I'm a boy," says the child with black hair. "I'm a girl," says the child with red hair. If at least one of them is lying, who is which?
Find three whole, positive numbers that have the same answer when multiplied together as when added together.
The more you take me, the more you leave me behind. Who Am I?
How is a fly different from a mosquito?
Until it is measured, not known. Yet how you miss it when it has gone. What is it?
How can I get the answer 24 by only using the numbers 8,8,3,3? You can use the main signs add, subtract multiply and divide.
I always drive my customer away. Who am I?
Can you find out the next digit in the following series ? 0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?
The inventor of the Rubik’s Cube didn’t realize he’d built a puzzle until he scrambled it the first time and tried to restore it.
