- To print sum of rows|columns|diagonals of an N x N magic matrix

User Input: 3

Output: 15

```
n=int(input("Enter N of N X N magic matrix(must be odd number) :"))
if n%2!=0 :
print("Sum of rows|columns|diagonals of ", n," x ",n," magic matrix :", int((n*(n*n+1))/2))
else :
print("N must be an odd")
```

Enter N of N X N magic matrix(must be odd number) : 5 Sum of rows|columns|diagonals of 5 x 5 magic matrix : 65Program

puzzle

**Remember :** Magic matrix are always odd value matrix

like : 3x3,5x5,7x7,.....

So, you must first check it for an Odd value

`(n*(n*n+1))/2 #Formula to calculate the sum`

To check for odd value

`n%2!=0`

Concept