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 #605692 - Wed Mar 16 2011 06:05 AM t. Now This One... ren33 Moderator Registered: Thu Sep 30 1999 Posts: 11763 Loc: Fanling  Hong Kong I just dont get How is it done?http://www.regiftable.com/regiftingrobinpopup.html _________________________ Wandering aimlessly through FT since 1999. Top
 #605712 - Wed Mar 16 2011 07:09 AM Re: t. Now This One... postcards2go Mainstay Registered: Thu Nov 20 2008 Posts: 885 Loc: New York City No matter what number you pick, when you subtract the two digits, you end up with a multiple of nine.18-1-8 = 912-1-2 = 954-5-4 = 4599-9-9 = 81It won't matter which two digit number you chose.You will find that *all* the gifts that are the same as your gift are multiples of 9. _________________________ ~~ postie Top
 #605904 - Wed Mar 16 2011 08:39 PM Re: t. Now This One... ren33 Moderator Registered: Thu Sep 30 1999 Posts: 11763 Loc: Fanling  Hong Kong Ahhhhhhhhhhhhhh!! I see. Thanks! _________________________ Wandering aimlessly through FT since 1999. Top
 #606225 - Thu Mar 17 2011 07:29 PM Re: t. Now This One... Juggernaut314 Explorer Registered: Tue Mar 03 2009 Posts: 54 Loc: Madison Wisconsin USA This is actually a convenient side effect of base ten. This works with a number of any length, not just 2 digits. Similarly, if you take any x digit number then rearrange that number in any fashion, their difference is a multiple of 9. I.e. 54321 - 31254 is divisible by 9. Top

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