9

[0,0,0,0,0,0,0,0,0]

No. of ways to arrange this array into 3 subarrays with equal sum?

Can anyone mathematically solve it for me to understand?

The answer is 28. Question is how?

9

[0,0,0,0,0,0,0,0,0]

No. of ways to arrange this array into 3 subarrays with equal sum?

Can anyone mathematically solve it for me to understand?

The answer is 28. Question is how?