Question

Decide whether or not the modulo system forms a group.{1, 2, 3, 4, 5}; multiplication modulo 6

Answer 1

option A Group and B Not Group

Answer 2

Check the requirements to be a group.
1. Closure
2. Associativity
3. Identity
4. Inverses
If it fits all four requirements it's a group, if not, it's not.

Answer 3

can you explain me. I don't understand

Answer 4

Which part, specifically, do you not understand?

Answer 5

I got it , its option A
Thanks for your help

Answer 6

That's not correct. The answer is that it is not a group.

Answer 7

It isn't closed under the multiplication, and there are not inverses for every element.