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Sunday Times Teaser 2538 – Octahedra

by Andrew Skidmore

Published: 15 May 2011

Fabule’s latest jewellery creation consists of a set of identically sized regular octahedra made of solid silver. On each octahedron, Fabule has gold-plated four of its eight equilateral triangle faces. No two octahedra are the same, but if Fabule had to make another, then it would be necessary to repeat one of the existing designs.

How many octahedra are there in the set?

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  1. Brian Gladman permalink

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