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 Everyday Examples
 Trichotomy Law:  For any real number, a, a>0, a=0 or a<0.
When grouping the numbers -5,-2, 0, 3 and 6, one would make three groups. {-5, -2} since both are less than 0, {0} since it equals 0, and {3,6} since it is greater than 0.