Reply To: Maths

[kford_academy]

To kick-start this topic:

MAGIC SQUARES

Definition: A magic square is defined to be a square of numbers such that each row, column and (major) diagonal has the same sum. As an example,
2 9 4
7 5 3
6 1 8
has a sum of 15 along each row/column/diagonal.

Problems: Complete the following magic squares.

#1
02 12 10
?? 08 ??
?? ?? ??

#2
13 20 ??
?? 14 ??
?? ?? ??

#3
Show that if a, b and c are known below then there is a unique solution:
a b ?
? c ?
? ? ?