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      10-30-2007, 05:40 PM   #1
DaveC
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OT: Bit Spooky?

Give it a go...

http://milaadesign.com/wizardy.html

(Stolen from another site, I'm guessing the average IQ is a tad higher here so maybe it'll be obvious)
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      10-30-2007, 06:07 PM   #2
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Quote:
Originally Posted by DaveC View Post
Give it a go...

http://milaadesign.com/wizardy.html

(Stolen from another site, I'm guessing the average IQ is a tad higher here so maybe it'll be obvious)
Seriously don't understand how this is done
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      10-30-2007, 06:10 PM   #3
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      10-30-2007, 06:12 PM   #4
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Originally Posted by needforspeed View Post
Seriously don't understand how this is done
There goes the theory on the average IQ then
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      10-30-2007, 06:17 PM   #5
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Originally Posted by needforspeed View Post
Seriously don't understand how this is done
It really is very simple maths, NFS!

Let's use a bit of algebra!

You pick 2 digits, so let's say the number is written as 'ab'.

'a' must be at least 1 & b could be 0-9, so

'ab' actually equals (10 x a) + b

Take away (a+b):

(10 x a) + b - (a + b) = 9 x a


So, you' re only ever left with the 9-times table- all the symbols are the same for those numbers, upto 9 x 9 ie 81.

They do change each go, but they still stay the same for all multiples of 9!

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Last edited by vivekk; 10-31-2007 at 04:27 AM.
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      10-30-2007, 06:19 PM   #6
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Quote:
Originally Posted by vivekk View Post
It really is very simple maths, NFS!

Let's use a bit of algebra!

You pick 2 digits, so let's say the number is written as 'ab'.

'a' must be at least 1 & b could be 0-9, so

'ab' actually equalls (10 x a) + b

Take away (a+b):

(10 x a) + b - (a + b) = 9 x a


So, you' re only ever left with the 9-times table- all the symbols are the same for those numbers.

Viv
ahh .. clever bit is that it rotates the symbols used for the multiples of 9 each time.

Bit slow tonight .. maybe its the pouilly fume
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      10-30-2007, 07:52 PM   #7
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Awww Viv you let it out a bit too soon but I'm impressed with the decimal explaination and the maths although its been so long I am buggered if I could reduce (10 x a) + b - (a + b) ... far too may brackets! Anyway, tis good especially after a few glasses of wine.
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      10-31-2007, 04:17 AM   #8
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Quote:
Originally Posted by DaveC View Post
Awww Viv you let it out a bit too soon but I'm impressed with the decimal explaination and the maths although its been so long I am buggered if I could reduce (10 x a) + b - (a + b) ... far too may brackets! Anyway, tis good especially after a few glasses of wine.
Sorry Dave!

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