If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

The Puzzle: Here is a famous prize problem that Sam Loyd issued in 1882, offering $1000 as a prize for the best answer showing how to arrange the seven figures and the eight 'dots' .4.5.6.7.8.9.0. which would add up to 82

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

The more of this there is, the less you see. What is it?

Why do you find that most of the buildings are deprived of the 13th floor?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

What is common among 11, 69, and 88?

In the image given, you can find several triangles. Can you count them all?

At a bar, three friends, Mr Green, Mr Red and Mr Blue, were having a drink. One man was wearing a red suit; one a green suit; and the other a blue suit. 'Have you noticed,' said the man in the blue suit, 'that although our suits have colours corresponding to our names, not one of us is wearing a suit that matches our own names?' Mr Red looked at the other two and said, 'You're absolutely correct. What colour suit is each man wearing?

What happened when the wheel was invented?