Science Fair Project Encyclopedia
260 (number)
260 is the magic constant of nxn magic square and n-Queens Problem for n = 8, the size of an actual chess board.
| Cardinal | Two hundred [and] sixty |
| Ordinal | 260th |
| Factorization | 
|
| Roman numeral | CCLX |
| Binary | 100000100 |
| Hexadecimal | 104 |
260 is also the magic constant of the Franklin magic square devised by Benjamin Franklin.
52 61 4 13 20 29 36 45 14 3 62 51 46 35 30 19 53 60 5 12 21 28 37 44 11 6 59 54 43 38 27 22 55 58 7 10 23 26 39 42 9 8 57 56 41 40 25 24 50 63 2 15 18 31 34 47 16 1 64 49 48 33 32 17
The minor diagonal gives 260, an in addition a number of combinations of two half diagonals of four numbers from a corner to the center give 260.
Given a 4 by 4 chessboard, there are only 260 ways to place six non-attacking bishops.
This article discusses 260 the number. To see information about the year 260, go to 260.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details