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UKMT Junior Kangaroo, 2015

Combinatorics Difficulty 2.0 Junior Find the answer United Kingdom

In the diagram, five rectangles of the same size are shown with each side labelled with a number. These rectangles are placed in the positions I to V as shown so that the numbers on the sides that touch each other are equal. Which of the rectangles should be placed in position I?

(A) A (B) B (C) C (D) D (E) E

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