Many people have asked me to include a magic effect they can perform for their friends here on Zappo's web page. Here is a very good one. You will need to print this page. Next cut out the disks.
Tell your friends that you have a computer brain. You can perform magic as fast as a computer. Ask them to think of a number between one and 15. Next ask them to place those disks that have their number into your "disk drive" which is your hand held up to resemble the disk slot on the computer. Make sure they put the disks in right side up and with the numbers so you can read them. When they have finished inserting the disks with their number, you instantly tell them what number they selected.
Secret: You add the red numbers in the upper left hand corner of each disk they hand you. The sum will equal the number they chose.

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