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    what are the 2 numbers that one adds to original number to pick the next number coming up? is it 9 and 11?

    0  Views: 510 Answers: 1 Posted: 13 years ago

    1 Answer

    http://www.jimloy.com/puzz/magic.htm 


    http://wbilljohnson.com/journal/math/ninetricks.htm 


    http://www.scribd.com/doc/56169719/Amazing-Math-Tricks



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