2 2 votes How many proper subgroups does the group $\mathbb{Z} ⊕ \mathbb{Z}$ have? $1$ $2$ $3$ Infinitely many Set Theory & Algebra tifrmaths2014 group-theory + – Misbah Ghaya 1.3k views answer comment Share Follow Print 0 reply Please log in or register to add a comment.
0 0 votes I think the answer is Infinitely many. Harry Richie answered Oct 5, 2019 Harry Richie comment Share Follow 0 reply Please log in or register to add a comment.