Answer :
This is what it would look like with 4 rows:
xxxxxxxxxxxx
xxxxxxxxxxxx
xxxxxxxxxxxx
xxxxxxxxxxxx
That is 4 rows by 12 columns, making 48 tiles.
That means there are 2 tiles leftover.
xxxxxxxxxxxx
xxxxxxxxxxxx
xxxxxxxxxxxx
xxxxxxxxxxxx
That is 4 rows by 12 columns, making 48 tiles.
That means there are 2 tiles leftover.