Q. 25.0( 1 Vote )

State the reason

Answer :

Here * is a binary operator defined on the set of integers Z.

To prove * is not commutative we have to give example showing that if we replace the terms with each other result are not same.


So take –1,3 є Z


Now –1 * 3 = –27 and 3 * –1 = –3


Therefore –1 * 3 ≠ 3 * –1


So * is not commutative.


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