MATHRIX IS A 5 5 × PUZZLE GAME WHERE WE PLACE THE DIGITS FROM...

21. Mathrix is a 5 5 × puzzle game where we place the digits from 1 to 5 in the

board such that each row and column contain the digits from 1 to 5 exactly

once. Circles with conditions are placed on some intersections and are meant

for the 2 pairs of diagonally adjacent cells. This can be the sum (＋ ), difference

(－ ) or only odd numbers can be used ( odd ). (For example if we have +5 this

means that the sum of the two diagonally adjacent numbers is 5)

Find the value of I + M + + S O .

2

1 M

I

2 −

7 +

3

S

odd

5

2 O