Effect: Show a single die and ask a friend to roll it landing on any number. Explain that you can magically predict the outcome of your friend’s roll before the die is thrown. Explain that you will write a number on a slip of paper and turn the paper face down on the table.
Turn your back and ask your friend to follow your instructions. First your friend is to roll the die. Now look at the numbers on the top of the die and the one on the bottom which is resting upside-down on the table. Add these two numbers together and divide by 2. The answer to the problem will be found written on the slip of paper.
Secret: It is very simple and works every time. All dice are made the same way. All dice have six sides and the two opposite sides always add up to seven. There are 3 possible combinations for your friend to roll; 5 and 2, 6 and 1, or 4 and 3. All these combinations equal 7. The answer 7 divided by 2 will always be 3 ½
Write on the slip of paper…
It will fool them everytime.