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UKMT Junior Kangaroo, 2017

Combinatorics Difficulty 1.0 Junior Find the answer United Kingdom

Sophie wants to complete the grid shown so that each row and each column of the grid contains the digits $1$ , $2$ and $3$ exactly once. What is the sum of the digits she will write in the shaded cells?

(A) $2$ (B) $3$ (C) $4$ (D) $5$ (E) $6$

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