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UKMT Junior Kangaroo, 2018

Combinatorics Difficulty 2.0 Junior Find the answer United Kingdom

Each of the designs shown is initially divided into squares. For how many of the designs is the total area of the shaded region equal to three-fifths of the area of the whole design?

(A) $0$ (B) $1$ (C) $2$ (D) $3$ (E) $4$

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