explain why are the following not groups:

1)the set of Z integers with operation subtraction
2)The set of Z integers with operation addition
3)The set of R* of all non zero real numbers with addition

Ask a New Question or answer this question.

Similar Questions

what's the definition of operationA to explain or show the similarities or differences between items or idea B an action or
1. 1 answer
For which operation is the set of integers not closed?A. addition B. subtraction C. multiplication D. division** I'm not sure on
1. 6 answers
what's the definition of operationA to explain or show the similarities or differences between items or idea B an action or
1. 1 answer
what's the definition of compareA to explain or show the similarities or differences between items or idea B an action or
1. 1 answer