Question

an operation * on z+ ( the set of all non negative integers) is defined as a*b = | a-b | for all a,b€ z^+ is * a binary operation on z+​

Answer 1

Operation ∗ is defined as a∗b=a−b, ∀a,b∈Z+

a,b∈Z+ But, if b>a then a−b becomes negative.

So, it is not true that a−b∈Z+ ∀a,b∈Z+

Thus, a∗b does not belong to Z+

Hence, ∗ is not binary on Z+

Answer 2

Step-by-step explanation:

ID = 801 720 6270

Pas = 1234

Önly G not B