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Fill the missing number, numbers are 1 to 9, numbers in each row add up to the right...

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Fill the missing number,
numbers are 1 to 9,
numbers in each row add up to the right,
numbers in each column add up to the bottom,
numbers in each diagonal add up to the right?

Guess the Numbers

posted Feb 18, 2015 by anonymous

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1 Answer

+1 vote
 
Best answer

1 1 7
4 3 5
1 5 1

The diagonal 5 is either the combination 1 2 2 or 1 1 3. Combining this with the 2nd row and 1st column leaves only 1 3 1.

answer Mar 16, 2015 by Jcm



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