It is the set of integers, denoted by Z.
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These comprise the set of integers. Incidentally, 0 is a natural number.
J
here are rational numbers--numbers that you can express as a fraction irrational numbers--numbers you cannot express as a fraction integers--whole numbers and their opposites(negatives) whole numbers--0, 1, 2, 3,... natural or counting numbers--1, 2, 3,....
In algebra, opposites are two numbers on opposite sides of zero. so 3 and -3 are opposite numbers because they are both 3 spaces away from 0.
"Opposites" cannot mean additive opposites since, by definition, their sum must be 0. So "opposites" is likely to mean multiplicative opposites. This gives the equation x + 1/x = 100 Then the two numbers are 0.010010 and 99.989999 to 6 dp.