There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

Can you find the thief by just looking at the picture below?

A bomb exploded in a room full of married couples and no one died. How?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Can you fill the blank with the correct number?

6 30 870 756030 _____

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

If eleven plus two equals one, what does nine plus five equal?

What does this mean?

CCCCCCC