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## Latin Square

A latin square is a square array of symbols set up in a way that makes every row and column unique.

Keep reading for an example of a simple latin square or jump straight to today's problem.

Once we're done, you can see that every row and every column has all three values. Try completing the $5 \times 5$ latin square below.

# Today's Challenge

A 5 by 5 Latin square uses the numbers 1 through 5 only once on each row and column.

Some numbers on the Latin Square above are already filled in. What are all the digits of the third row, from left to right?

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