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Rational Numbers

The reciprocal of any rational number p/q , where p and q are integers and q ≠ 0, is

(a) p/q (b) 1 (c) 0 (d) q/p

Rational Numbers

The reciprocal of 0 is
(a) 1 (b) –1 (c) 0 (d) Not defined

Rational Numbers

The reciprocal of –1 is
(a) 1 (b) –1 (c) 0 (d) Not defined

Rational Numbers

The reciprocal of 1 is
(a) 1 (b) –1 (c) 0 (d) Not defined

Rational Numbers

If x be any rational number then x + 0 is equal to
(a) x (b) 0 (c) – x (d) Not defined

Rational Numbers

If x + 0 = 0 + x = x, which is rational number, then 0 is called
(a) identity for addition of rational numbers.
(b) additive inverse of x.
(c) multiplicative inverse of x.
(d) reciprocal of x.

Rational Numbers

. Multiplicative inverse of a negative rational number is
(a) a positive rational number.
(b) a negative rational number.
(c) 0
(d) 1

Rational Numbers

One (1) is
(a) the identity for addition of rational numbers.
(b) the identity for subtraction of rational numbers.
(c) the identity for multiplication of rational numbers.
(d) the identity for division of rational numbers.

Rational Numbers

Zero (0) is
(a) the identity for addition of rational numbers.
(b) the identity for subtraction of rational numbers.
(c) the identity for multiplication of rational numbers.
(d) the identity for division of rational numbers.

Rational Numbers

Which of the following is not true?
(a) rational numbers are closed under addition.
(b) rational numbers are closed under subtraction.
(c) rational numbers are closed under multiplication.
(d) rational numbers are closed under division