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

(i) True

(ii) False

[ Subtraction is not commutative on rational numbers because if order of number changes , the answer also changes .. ]

(iii) False

[ Addition is commutative on rational numbers because even though the order of number changes , the answer doesn't change ]

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