#039;s Tests | Dozenal Society of America
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Promoting base twelve and alternative base mathematics
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The Dozenal Society of America
The DSA is a voluntary, nonprofit education corporation, organized for the conduct of research and education of the public in the use of dozenal (also called duodecimal or base-twelve) in calculations, mathematics, weights and measures, and other branches of pure and applied science.

The Aspirant's Tests

Title: The Aspirant's Tests
Author: Dozenal Society of America
Year:
Subject: Tests for proficiency in the dozenal system.
http://www.dozenal.org/../sites_bck/default/files/DSA_aspirants_test_0.pdf

Remastered versions of all four of the old DSA aspirant's tests, passage of which was formerly required for membership in the Society, complete with answers. Answers are conveniently linked from each question.