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UKMT Pink Kangaroo, 2020

Algebra Difficulty 2.0 Junior Find the answer United Kingdom

In each of the cells, a number is to be written so that the sum of the $4$ numbers in each row and in each column are the same. What number must be written in the shaded cell?

(A) $5$ (B) $6$ (C) $7$ (D) $8$ (E) $9$

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