UCEED 2020

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UCEED2020Q36·msq·Hard64 attempts

Dropped question

The official answer key awarded full marks to all candidates. Any submitted answer is marked correct.

Seven identical playing dice are unfolded in an identical manner. Six of the unfolded dice are laid out on a flat surface and are arranged to touch each other without overlapping. The figure shows a portion of the arrangement. Which face(s) from the seventh unfolded dice CAN NOT replace X if overlap must be avoided?