Q. 84.7( 9 Votes )

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.

Answer :

When a rational number is multiplied by 1 the number obtained will be the same number,hence one (1) is the identity for addition of rational numbers.


(a)Incorrect because when 1 is added to a number the result obtained will not be the same number to which 1 was added.


(b) Incorrect because when 1 is subtracted from a number the result obtained will not be the same number.


(d)When a number is divided by 1 the number will be the reciprocal of the number and will not have the same value.

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