THIS IS MIND BLOWING
Someone needs to figure out how this works! Amazing.
This stumped me. If you can figure out how she does it please let me know. I never even touched the cursor on my chosen number..
Once I did not even follow the directions, I just looked at the number and she still got it!
This will drive you crazy!
http://www.regiftable.com/regiftingrobinpopup.html
It does!
I tried several times, playing to the rules and not playing to the rules. Every time I play according to the rules, it works. But when I just choose any two dgit number and
don't substract, it doesn't work! Or I tried doing only one substraction, it didn't work either!
I found out that the gifts change every time. For example, I chose 32 as number, then sustracted:
32 - 2 - 3 = 27
Then I chose gift #27 and she had it right. I played three or four rounds with choosing gift #27, and she was right every time (and it was a different gift every time) . Then I decided to switch to gift #26 - and she got it wrong!
***Spoiler***Wait, wait, wait, I thought about it:
For every ten numbers you originally chose, there's only one possible number you can get after the substraction. Try the thirties:
30 - 0 - 3 = 27
35 - 5 - 3 = 27
36 - 6 - 6 = 27
39 - 9 - 3 = 27
That't logical, because you always substract to the next lower tenner and then substract the # of tenner:
all twenties numbers lead you always to the 18
all thirties # lead always to 27
all forties numbers lead you always to the 36
all fifties # lead always to 45
all eighties # lead always to the 72
and so on.....
So there are only ten numbers you can end up with. Only ten numbers are mathematically possible. But how does she know which of them I chose?
That part I haven't figured out yet.