See more about Fibonacci at our Fibonacci and Nature page. |

You start with seven empty boxes:

1 | 2 | 3 | 4 | 5 | 6 | Total |

- Ask a guest to choose any two numbers and write them in boxes 1 and 2.
*Hint: it makes life easier if the numbers are below 10!* - The guest then adds boxes 1 and 2, put the answer in box 3.
- Next they add boxes 2 and 3 and put the answer in box 4.
- Then they add boxes 3 and 4 and put the answer in box 5.
- Now YOU write a prediction on a separate piece of paper!
- The guest adds boxes 4 and 5 and puts the answer in box 6.
- The guest now adds up ALL the numbers in the six boxes and writes the answer in the "total" box.
- You show your piece of paper which has the answer already written on it!

Here's how it might look if the chosen numbers are 7 and 4:

1 7 | 2 4 | 3 11 | 4 15 | 5 26 | 6 41 | Total104 |

So how did you know the answer was going to be 104 even before box 6 was filled in? Answer - the prediction is 4 x the number in box 5! Here 4 x 26 =104.

This trick and many others are explained in the book The PHANTOM X (algebra) | There's more about Fibonacci in NUMBERS the Key to the Universe |

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Total |

As before, your guest choses two numbers for boxes 1 and 2, then goes on to fill the other boxes by adding the numbers in the previous two boxes together. You can write the prediction after box 7 is filled in because the total will be 11 x the number in box 7!