-
No digit is used twice.
-
3 is the only digit not used.
-
Digits in the third row are all
ODD.
-
Digits in the second row are all
EVEN.
-
7 is not in the same row as 5.
-
6 and 8 are in the same row but
different columns.
-
2 and 8 are in the same column but
different rows .
-
The sum of each row and column is
given below.