Zin Obelisk

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

In the ancient city of Atlantis a monument called a Zin Obelisk was built in honour of the goddess Tina.

The structure (a cuboid) took less than two weeks to complete.

Your task is to determine on which day of the week the monument was completed.

You will need a set of information cards to solve the problem.

For the set, you'll need to print off this Word document or this pdf

Sample zin cards


We have not been able to track down the source of this old problem. If you know where it originated, please let us know.

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Published May 2008.