These brain teasers have been submitted by our visitors from all around the world. These quiz questions are fun for the brain and will puzzle you for some time.

We have lots more puzzles to provide fun for your brain. Have fun solving these quiz questions. Choose from the following brain games:

- How many sides does a hexagon have?
- This riddle must be done IN YOUR HEAD and NOT using paper and pen or a calculator. Try it!

Take 1000 and add 40 to it. Now add another 1000 to it.

Now add 30. And another 1000.

Now add 20. Now add another 1000. Now add 10.

What is the total? - What is the Roman numeral for 500?
- What metric unit of length do the letters 'cm' stand for?
- A man weighing 14 stone and his two sons weighing 7 stone each were stranded on an island. All they had to get off the island was a small boat, but it could only hold 14 stone. How did the man and his sons get off the island?
- What is a prime number?
- How many sides does a pentagon have?
- How many sides does an octagon have?
- How do you write 23 using only the number 2?

34 using only the number 3?

56 using only the number 5?

100 using only the number 9? - What are the next three numbers in this series: 14, 21, 28, 35,...

- A farmer has seventeen sheep. All but nine of them die. How many sheep does he have left?
- How many tens equal one thousand?
- In division, the numeral the dividend is divided by is called...what?
- How many feet are in a yard?
- You are 9 years old and your dad is 47. How old will your dad be when you are 21?
- How many squares are there on a chessboard? (Hint: The answer is not 64.)
- What is a greater distance: 10 inches or 10 centimetres?
- Is a peck larger than a bushel?
- How many centimetres are in a metre?
- In a drawer you have black socks and white socks. They are not stored away in pairs. Without looking, how many times will you have to reach into the drawer to come out with a matching pair?

To see more Math Games, click the `Refresh` button, below.