Did You Know?
There are exactly 6,670,903,752,021,072,936,960 possible sudoku grids.
This number was calculated in 2005 using computer analysis. It demonstrates how even simple-seeming puzzles can have enormous complexity.
Did You Know?
The Euler characteristic of any convex polyhedron is always 2.
The number of vertices minus edges plus faces always equals 2 for any convex polyhedron. This topological invariant...
Did You Know?
A regular pentagon contains the golden ratio in several different ways.
The ratio of a diagonal to a side is the golden ratio, as is the ratio of the...
Did You Know?
The mathematical constant π appears in the solution to problems that seem unrelated to circles.
π shows up in probability theory, number theory, and even the distribution of prime numbers. This unexpected appearance...