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Treasure Hunting & Metal Detecting Forum Message Boards - Detector Hunter Whites Minelab Tesoro XP > Miscellaneous > Chit Chat & Everything Else >

NEAT LIL MATH TRICK

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dr.dtector Topic starter

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minelab

	NEAT LIL MATH TRICK « on: March 19, 2007, 02:51:18 pm »

1) Go to the link below. After reading each window, click on the boy in
   the lower right corner of the picture.

2) In the last window, type in your answer in the white box using the
   keyboard (there is NO cursor).

3) Watch the paper in the boy's hand. You will be amazed . . . and no, I
   don't know how it's done. But if you figure it out, let me know!

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http://digicc.com/fido/

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« Last Edit: December 10, 2010, 10:11:31 pm by GoldDigger1950 »	Logged

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	Re: NEAT LIL MATH TRICK « Reply #1 on: March 19, 2007, 06:30:38 pm »

Pretty neat Doc.

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	Re: NEAT LIL MATH TRICK « Reply #2 on: March 21, 2007, 01:00:54 pm »

THATS GOOD Grin

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	Re: NEAT LIL MATH TRICK « Reply #3 on: March 21, 2007, 09:10:27 pm »

Cleverly done. The math is not terribly difficult, it involves some modulo 9 arithmetic. In the end he adds up the numbers you give him and then subtracts that from the closest multiple of 9. That is your number. (The sum of all the digits of the difference of the two numbers you compute at the beginning is always a multiple of 9).

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