# Any ring has at least 2 units . [closed]

I Have a question .. can any one help me ? True or false : Any ring has at least 2 units .

• Is $\mathbb{Z}_2$ a ring? – Robert Z Oct 15 '19 at 14:58
• $\mathbb Z_2$ should be right after $\mathbb Z$ on your list of "simple examples I could check before asking." – rschwieb Oct 15 '19 at 15:51

Take as a ring $$\mathbb{Z}/2\mathbb{Z}$$
• @user619263 do you know how $\mathbb{Z}/2\mathbb{Z}$ look like? – user289143 Oct 15 '19 at 15:35