-(-x) is same as, x, Addition is associative for, Natural , rational and whole numbers, Between any two rational numbers, there lie, infinite rational numbers, If x be any rational number, than x+0 is, x, Reciprocal of x is, 1/x, If y be the reciprocal of rational number x, then the reciprocal of y will be, x, Additive identity of rational numbers is, 0, Rational numbers are not closed under, Division, The additive inverse of a/b is, -a/b, The product of two rational numbers is always a, Rational number.

Rational numbers

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