How do they do this? - Printable Version +- JapCarForum (https://www.japcarforum.com) +-- Forum: General Discussions (https://www.japcarforum.com/forumdisplay.php?fid=3) +--- Forum: The JCF Lounge (https://www.japcarforum.com/forumdisplay.php?fid=17) +--- Thread: How do they do this? (/showthread.php?tid=1807)

How do they do this? - Lexusboy - 16-09-2017 How do they do this? http://www.regiftable.com/regiftingrobinpopup.html I tried this a few times and it worked each time:confused: How do they do this? - Sparkystav - 16-09-2017 Because when you subtract the two digits from your first number you ALWAYS gets a multiple of 9. 37 - 7 -3 = 27 (3*9) 69 - 6 - 9 = 54 (6*9) etc If you look on the table all the multiples of 9 are the same thing so she must be right