Computer Forums Math question (semi-simple)

 04-23-2011, 11:14 AM #1 In Runtime   Join Date: Jun 2010 Posts: 193 Math question (semi-simple) What makes the following magic square: 11 05 08 10 02 16 13 03 14 04 01 15 07 09 12 06 so special? __________________ __________________
 04-23-2011, 11:36 AM #2 ~~~~~~~~   Join Date: Jan 2005 Location: Wales Posts: 5,556 Re: Math question (semi-simple) All of the Rows/Columns/Diagonals add up to 34. But that's the very point of a magic square, so perhaps it's something else __________________ __________________
04-23-2011, 12:30 PM   #3
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Join Date: Jun 2010
Posts: 193
something else

Quote:
 Originally Posted by j03 All of the Rows/Columns/Diagonals add up to 34. But that's the very point of a magic square, so perhaps it's something else
It is something else (the only one out of 880 4 x 4 normal magic squares that has this property).
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 04-23-2011, 12:54 PM #4 ~~~~~~~~   Join Date: Jan 2005 Location: Wales Posts: 5,556 Re: Math question (semi-simple) Ah - the sum of the four terms including (and touching) the corner terms is also 34? __________________
04-23-2011, 01:00 PM   #5
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Join Date: Jun 2010
Posts: 193
Secondary magic number

Quote:
 Originally Posted by j03 Ah - the sum of the four terms including (and touching) the corner terms is also 34?
You forgot the center square, the intermediate squares, the quadrants and the two lopsided squares (btw there are 86 ways to add up to 34).

What I'm talking about here is a discovery I made within the last two years about a secondary magic number with this square.
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 04-23-2011, 01:08 PM #6 ~~~~~~~~   Join Date: Jan 2005 Location: Wales Posts: 5,556 Re: Math question (semi-simple) So I did. __________________
 04-23-2011, 07:05 PM #7 Guru     Join Date: Jan 2008 Location: U.S. Posts: 7,841 Re: Math question (semi-simple) Unless it is naturally occurring in nature it is not a special set of numbers __________________
 04-23-2011, 07:29 PM #8 Site Team     Join Date: Mar 2004 Posts: 8,070 Re: Math question (semi-simple) I was just wondering how I managed to get all the way through primary school, secondary school, GSCE, A-level and two years of maths at uni without coming across "Magic Squares" then I realised, it's because they are a curiosity, I had come across the most famous one (with numbers 1 - 9 making a symmetrical shape). but I forgot about them as they appear to have no practical use what-so-ever. __________________ I didn’t fight my way to the top of the food chain to be a vegetarian… Im sick of people saying 'dont waste paper'. If trees wanted to live, they'd all carry guns. "The inherent vice of capitalism is the unequal sharing of blessings; The inherent vice of socialism is the equal sharing of miseries."
 04-23-2011, 07:30 PM #9 Guru     Join Date: Jan 2008 Location: U.S. Posts: 7,841 Re: Math question (semi-simple) HEY! What's so special about this magic triangle? 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1 I'm sorry it doesn't format correct. It should be a scalene triangle with the bottom being the different length. __________________
 04-23-2011, 07:39 PM #10 Site Team     Join Date: Mar 2004 Posts: 8,070 Re: Math question (semi-simple) that the two numbers above the number below make the sum of that number that going down the triangle the outside is always 1's the second row is always one higher that the one above it. (regular counting) that the third row is triangular numbers. that is was invented by a floppy haired French man? what's not special about that triangle??? I wouldn't exactly call it magic though... __________________ __________________ I didn’t fight my way to the top of the food chain to be a vegetarian… Im sick of people saying 'dont waste paper'. If trees wanted to live, they'd all carry guns. "The inherent vice of capitalism is the unequal sharing of blessings; The inherent vice of socialism is the equal sharing of miseries."

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