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Kamat's Potpourri : The History, Mystery and Diversity of India
Vedic Mathematics is a system of computing tailored to quick mental arithmetic,
believed to have been prevelant in ancient India. There seem to be doubts as to
origin of the techniques from the Vedas, but nevertheless the techniques exist and
could prove to be quite beneficial to an effective user. Here are a few links
to pages about the origins of Vedic math and the techniques themselves.