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UKMT Grey Kangaroo, 2024

Number theory Difficulty 3.0 AMC 10/12 Find the answer United Kingdom

Four different positive integers are placed on a grid and then covered up. The product of the integers in each row and column is shown in the diagram. What is the sum of the four integers?

(A) $10$ (B) $12$ (C) $13$ (D) $14$ (E) $15$

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