In a classic 3x3 magic square using the integers 1 through 9 exactly once, every row, column, and diagonal sums to 15. What number MUST occupy the center cell?
5
The center cell of a 3x3 magic square must be the average of the set of numbers 1 through 9, which is 45 / 9 = 5.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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