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Author Topic: How does this mathematical trick work?  (Read 3058 times)

Offline Carolyn

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How does this mathematical trick work?
« on: 19/02/2008 05:29:10 »
I got this off of another forum.  Can anyone explain how this works?  Also, why do the symbols change everytime you try again?

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*Mods, if I'm in the wrong forum please move. :)
« Last Edit: 04/03/2008 23:47:15 by chris »


 

Offline Carol-A

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Re: How does this mathematical trick work?
« Reply #1 on: 19/02/2008 07:22:23 »
I sent you a private message.... wouldn't want to give it away to everyone too soon!

BTW, your link is faulty, you have too many http's in there
 

Offline Karen W.

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Re: How does this mathematical trick work?
« Reply #2 on: 19/02/2008 07:58:19 »
Carolyn, I removed the extra http for you!! The link works fine now!
 

lyner

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Re: How does this mathematical trick work?
« Reply #3 on: 19/02/2008 09:32:21 »
Isn't arithmetic wonderful?
How about doing the same thing in another number base?
 

Offline Carol-A

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Re: How does this mathematical trick work?
« Reply #4 on: 19/02/2008 09:47:44 »
Would that work?
 

Offline neilep

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Re: How does this mathematical trick work?
« Reply #5 on: 19/02/2008 09:59:32 »
*sheepy saves the day*... And I have corrected it so this time the link does actually take you to the right place !

Remember girlies.....you are girlies !!...you really must factor this in to when you're working things out !!  ;D
 

Offline Carolyn

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Re: How does this mathematical trick work?
« Reply #6 on: 19/02/2008 17:14:10 »
I sent you a private message.... wouldn't want to give it away to everyone too soon!

BTW, your link is faulty, you have too many http's in there

Thanks Carol!  Now I feel silly that I didn't figure it out myself. :)
 

Offline Carolyn

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Re: How does this mathematical trick work?
« Reply #7 on: 19/02/2008 17:21:13 »
*sheepy saves the day*... And I have corrected it so this time the link does actually take you to the right place !

Remember girlies.....you are girlies !!...you really must factor this in to when you're working things out !!  ;D

Hmph!

Thank you for correcting the link.

It must be burdensome to a boy sheep in high heels and womens lingerie and be as clever as ewe are.
 

lyner

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Re: How does this mathematical trick work?
« Reply #8 on: 19/02/2008 22:04:08 »
Would that work?
Well - you will notice that, for all numbers from 10 to 19, the answer is always 9, for all numbers from 20 to 29, the answwer is always 18 . . . and so on 27,36.
Using the unfamiliar symbols disguises this.

If you did it to base 8, the answers would be [7],[16[, [25] for [10] to [17],[20] to 27], [30] to [37]. I think my sums are correct. I leave it to the student to work out the results for base 16.
 

The Naked Scientists Forum

Re: How does this mathematical trick work?
« Reply #8 on: 19/02/2008 22:04:08 »

 

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