Property 1 (closure property): The product of two integers is always an integer.

Property 1 (Closure property): The sum of two integers is always an integer.

The sum of two integers is always an integer.

Property 1 (Closure property): The subtraction of any two integers is an integer i.e.for any two integers a and b a-b is an integer.

The difference of two integers jis always an integer.

Product of two negative integers is always-