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Ontario Mathematics Olympiad
Sample Question #1NOTE: This was an event for two students.
Magic squares are mathematical puzzles that date back to 2200 BC, when they were called, Lo-shu. In a magic square all the rows, columns and diagonals sum to the same number.
Fill in the following square using only the numbers from 0 to 15 (once each) so that the sum of the rows, columns and diagonals is 30.
How many interesting number combinations can you find in this square?
- all rows add to 30
- all columns add to 30
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