Answer: 1 row of 24, 2 rows of 12, 3 rows of 8, 4 rows of 6.
Step-by-step explanation: To find how long the rows should be whenever you add another row, divide 24 by however many rows you have. Technically you can also have 6 rows of 4, 8 rows of 3, 12 rows of 2, and 1 row of 24, but those are just the same thing rotated 90 degrees.