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UKMT Grey Kangaroo, 2024

Combinatorics Difficulty 2.0 Junior Find the answer United Kingdom

Tarek wants to shade two further squares on the diagram shown so that the resulting pattern has a single axis of symmetry. In how many different ways can he complete his pattern?

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

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