Question

Which of the following property holds good for the expression
x + y = y + x ?

• A. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> commutativity
• B. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> associativity
• C. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> distributivity
• D. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> closure

Answer 1

The correct option is A <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> commutativity

According to commutative property, changing the order of the operands does not change its result.

For example, if a and b are two rational numbers, then
a + b = b + a and a x b = b x a.
Taking numerical examples -
$\frac{1}{3}+\frac{1}{2}=\frac{1}{2}+\frac{1}{3}$ and
$\frac{1}{3}\times \frac{1}{2}=\frac{1}{2}\times \frac{1}{3}$