You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Why is 6 afraid of 7?

Find the value of "?" in the ball picture Riddle below:

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Can you count the number of triangles in the picture below?

What runs around the whole yard without moving?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

What begins with T, ends with T, and has T in it?