For this case we have that by definition, an array can be defined as a set of elements (numbers) arranged in rows and columns.
Example:
When it is said that an array is m * n we have:
m: Number of rows
n: Number of columns
An example of a 3 * 3 array is observed.
![\left[\begin{array}{ccc}a_(11)&a_(12)&a_(13)\\a_(21)&a_(22)&a_(23)\\a_(31)&a_(32)&a_(33)\end{array}\right]](https://img.qammunity.org/2020/formulas/mathematics/middle-school/j8lot0xql01gfdaz0e0lmsuoit407vfmw1.png)
In this problem, they tell us that m = 3. So to build a array with the 24 counters we have:

That is, 8 columns.
Then we have a 3 * 8 array
Answer:
The array will have 3 rows and 8 columns