Question

The operations addition and multiplication are () commutative for rational numbers. (ii) associative for rational numbers. •​

Answer 1

Answer:

(a)

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

Checking commutative:-

Let two no. A and B

i) A+B= B+A

so addition is commutative

ii)A×B= B×A

so multiplication is also commutative

Checking associative :-

Let three no.'s A,B and C than,

i) A+(B+C)= A+B+C= (A+B)+C.

So addition is associative

ii) A×(B×C)= A×B×C= (A×B)×C

so multiplication is also associative.

And hence ,

multiplication and addition both are associative and commutative