369 (number)
Encyclopedia
Three hundred sixty-nine is the natural number
following three hundred sixty-eight and preceding three hundred seventy.
of the 9 × 9 magic square
and the n-Queens Problem
for n = 9.
There are 369 free octomino
es (polyomino
es of order 8).
Natural number
In mathematics, the natural numbers are the ordinary whole numbers used for counting and ordering . These purposes are related to the linguistic notions of cardinal and ordinal numbers, respectively...
following three hundred sixty-eight and preceding three hundred seventy.
In mathematics
369 is the magic constantMagic constant
The magic constant or magic sum of a magic square is the sum of numbers in any row, column, and diagonal of the magic square. For example, the magic square shown below has a magic constant of 15....
of the 9 × 9 magic square
Magic square
In recreational mathematics, a magic square of order n is an arrangement of n2 numbers, usually distinct integers, in a square, such that the n numbers in all rows, all columns, and both diagonals sum to the same constant. A normal magic square contains the integers from 1 to n2...
and the n-Queens Problem
Eight queens puzzle
The eight queens puzzle is the problem of placing eight chess queens on an 8×8 chessboard so that no two queens attack each other. Thus, a solution requires that no two queens share the same row, column, or diagonal...
for n = 9.
There are 369 free octomino
Octomino
An octomino is a polyomino of order 8, that is, a polygon in the plane made of 8 equal-sized squares connected edge-to-edge. The name of this type of figure is formed with the prefix oct-. When rotations and reflections are not considered to be distinct shapes, there are 369 different free...
es (polyomino
Polyomino
A polyomino is a plane geometric figure formed by joining one or more equal squares edge to edge. It is a polyform whose cells are squares. It may be regarded as a finite subset of the regular square tiling with a connected interior....
es of order 8).
In other fields
369 is also:- The year 369369Year 369 was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Galates and Victor...
or 369 BC369 BCYear 369 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Fidenas, Cicurinus, Cossus, Cornelius, Cincinnatus and Ambustus... - A SingaporeSingaporeSingapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
gang, also known as SalakauSalakauSalakau, which literally means '369' in Hokkien, also known as "Sah Lak Kau", is a street gang or secret society based in Singapore. The numbers 3, 6 and 9 add up to 18, which was the name of an older gang; the number signified the 18 lohans of Shaolin.- Gang violence in Singapore :In the late...
in HokkienHokkienHokkien is a Hokkien word corresponding to Standard Chinese "Fujian". It may refer to:* Hokkien dialect, a dialect of Min Nan Chinese spoken in Southern Fujian , Taiwan, South-east Asia, and elsewhere....