You cannot scientifically tell if a number is good or not, but one could assume that it is lucky because they they found 4 two dollar bills or won the lottery wich had all 4's in it. If 4 is a good number, that is up to you.
however, the number 4 sounds a lot like death in Chinese and is unlucky in China, which is the reson why it is colored red on a Chinese dice, because the luckyness of the color red counteracts the unluckiness of the number four.
In essence 4 is unlucky in China much like 13 is unlucky in the US.
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Well the number 4 is actually my lucky number but it's nit a good number to every one just some people But people do believer it's a good number because it's a small even number and can be divided, be the divider and because it takes slot of part with fractions which you use a lot in life
8/4 = 2 That is an integer, or a whole number - not a mixed number. You could write it as 20/1 but there is not a single good reason for doing that.
basically a absolute value of a number is a positive of that number and a negative of the number. For example the absolute value of 4 is 4 and -4. |4| = 4;-4
4 is a square number, and an even number.
-4 is a rational number