One (1) is

Question:

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

Solution:

(c) One (1) is the identity for multiplication of rational numbers.

That means,

If a is  a rational number.

Then, a-1 = 1-a = a

Note One (1) is the multiplication identity for integers and whole number also.

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