Question

Do you remember magic triangles? Come now, let s make some magic squares.

• Fill this square using all the numbers from 21 to 29.
  Rule: The total of each side is 75.
  

Answer 1

Given that total of each side is 75

We can use numbers from 21 to 29.

• In the first row:
  The required number
  = 75 – (26 + 22)
  =75 – 48 = 27
• In the first column:
  The required number
  = 75 – (26 + 28)
  = 75 – 54 = 21
• In the second row:
  The required number
  = 75 – (21 + 25)
  = 75 = 75 – 46 = 29
• In the third row:
  The required number
  = 75 – (28 + 24)
  = 75 – 52 = 23
• Number in first box = 28
  Number in second box = 23
  So, number in third box
  = 75 – (28 + 23)
  = 75 – 51= 24

Hence, the complete magic square is as follows: