Question

Which of the following alternatives is wrong?
Given that
(i) difference of two rational numbers is a
rational number
(ii) subtraction is commutative on rational
numbers
(iii) addition is not commutative on rational
numbers.​

Answer 1

Answer:

Solution

1. When a rational number is multiplied, add or subtracted by any rational number, result is a rational number. For division, denominator must not be zero.

2. Commutative property is only followed by addition and multiplication.

Hence, statements (ii) and (iii) are wrong

Answer 2

Answer:

(ii) and (iii)

step by step explanations:

(ii) When a rational number is multiplied, add or subtracted by any rational number, result is a rational number. For division, denominator must not be zero.

(iii) Commutative property is only followed by addition and multiplication.