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There are 12 months in the year, divided roughly into 4 seasons, 12 signs of the Zodiac, divided into 3 sets of 4 each, and 12 hours, repeated though each day and night.
There are 12 different pentominoes, if pieces can be flipped over. Otherwise, there are 18.
12 is divisible by the sum of its digits and by their product.
The product of the proper divisors of 12 is 12^2 = 144.
12^2 = 144 and reversing all digits, 21^2 = 441.
The same pettern fits 13^2 = 169 and 31^2 = 961 and other squares of numbers with sufficient small digits.
There are 12 tones in the modern 12-ton musical scale.

The second cube: 8 = 2^3. The only cube that is one less than a square 8 = 3^2 - 1 and the only power that differs by 1 from another prime power.
The sixth Fibonacci number, and the only Fibonacci number that is a cube, apart from 1.
The number of parts into which 3 dimensional space is divided by 3 general planes.
There are 8 notes in an octave.
The first number in English alphabetic sequence.
It is possible to place the maximum 8 queens on a chessboard, so that no queen attacks any other, in 12 essentially different ways.
8 times any triangular number is 1 less than a square.
A number is divisible by 8 if the number formed by its last three digits is divisible by 8.

Becky

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