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UKMT Junior Kangaroo, 2023

Combinatorics Difficulty 2.0 Junior Find the answer United Kingdom

What is the largest number of "T" shaped pieces, as shown, that can be placed on the $4 \times 5$ grid in the diagram, without any overlap of the pieces?

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

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