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IMSO 2009 Mathematics — Taiwan Second Round Short Answer (20 Questions) Question 14

IMSO Maths · IMSO 2009 Mathematics — Taiwan Second Round Short Answer (20 Questions)

Question 14

On this diagram you may start at any square and move up or down or across (but NOT diagonally) into the next square. No square may be used twice. The digits in each square are written down in the order they are used to form a number. What is the largest number that can be made?

Question illustration