In a “magic square”, the sum of the numbers in each row, in each column and along the diagonal is the same. Is this a magic square?
From the above question, we have:
Sum along the 1st row = 
+ 
+ 
= 
Sum along the 2nd row = 
+ 
+ 
= 
Sum along the 3rd row = 
+ 
+ 
= 
Sum along the 1st column = 
+ 
+ 
= 
Sum along the 2nd column = 
+ 
+ 
= 
Sum along the 3rd column = 
+ 
+ 
= 
Sum along the 1st diagonal = 
+ 
+ 
= 
Sum along the 2nd diagonal = 
+ 
+ 
= 
Therefore, sum of all the rows, columns and diagonals of this square are equal
Hence,
It is a magic square
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