What is the sum of a 3×3 magic square?
What is the sum of a 3×3 magic square? The Magic 3×3 Square top You have 1+2+3+4+5+6+7+8+9=45. In a magic square you have to add 3 numbers again and again. Therefore the average sum of three numbers is 45:3=15. The number 15 is called the magic number of the 3×3 square. How do you solve […]