Intelligent Math Puzzle – Challenge 93

This great brain-teasing math challenge is created for those who enjoy solving complicated logic problems. The solution is also given.

Intelligent Math Puzzle – Challenge 93


The numbers in each set of nine numbers are related in a certain way. What is the value of the question mark?

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The correct answer is 1.

Column 3 on right is the sum of two columns of the right set minus the difference of the two right columns of the left set of numbers.

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