Can anyone tell me how this is done?

[RogerS]

http://milaadesign.com/wizardy.html

very, very strange. Tried it four times and it was right everytime. So how do they do it?

 

[Woody Alan]

Roger

Write down a 4 digit number eg 2453
add the individual digits together eg 2+4+5+3 ...= 14
subtract 14 from the original number 2453-14 = 2439

if you follow my example with a 4 digit number of your choice post back with any of the three digits from the answer e.g 2*39 in any order say 3*92

Alan

EDIT unless someone is desperate to tell you before me

 

[LyNx]

your number is say 23, that comes to 18.

24 = 18
25 = 18
26 = 18
27 = 18

31 = 27
32 = 27
33 = 27

and so on

If you look at the image for 18, 27 , 36, 45 etc, they are all the same.

 

[RogerS]

Ah well spotted. I knew it had to be related to one of those mathematical tricks...just didn't spot the duplicates! Now to impress my sister with my knowledge :twisted:

 

[Woody Alan]

Oh well no fun there then

 

[Russell]

It took me ages to type it so I am going to post anyway even if I was beaten to it :lol:

well...a two-digit number can be written as 10x+y, where 1<=x<=9 and 0<=x<=9.

Then the game asks you to add x and y and deduct them from your number. 10x+y-(x+y)=9x. So the number you end up with has to be divisible by 9.

Well, if you look at the map of symbols they give you in Step 3, all those divisible by 9 have the same symbol.

Of course, the common symbol for the multiples of 9 changes every time you do the game, so you think it's a different one each time, and bingo, the game has 'guessed' the number you were thinking of.
_________________

 

[Slim]

Still, I think its pretty good.

 

[RogerS]

Russell - you answered the question that sprang to mind as I was driving home.

Slim...as you say..very, very clever. I knew about the Nine thing...just not picked up on the fact that they changed the images !

 

[oddsocks]

thought I'd try it on my wife - she picked the same number twice, 'oh! the shapes changed' and still didn't work it out