Recreations in Mathematics
Book Description
From the ten fingers arose ultimately the decimal system of numeration. Recording the results of counting was done by theE gyptians and other ancient nations by means of strokes and hooks; for one thing a single stroke I was made, for two things two strokes 11 were used, and so on up to ten which was represented by fl. Then eleven was written I fl, twelve 11H, and so on up to twenty, or two tens, ...
MoreFrom the ten fingers arose ultimately the decimal system of numeration. Recording the results of counting was done by theE gyptians and other ancient nations by means of strokes and hooks; for one thing a single stroke I was made, for two things two strokes 11 were used, and so on up to ten which was represented by fl. Then eleven was written I fl, twelve 11H, and so on up to twenty, or two tens, which was represented by flfl. In this way the numeration proceeded up to a hundred, for which another symbol was employed. Names for 11, 111, 1111, fl fl, etc., appear in theE gyptian hieroglyphics, but a special symbol for each name is not used. Probably the Hindoos first invented such symbols, and passed them on to the A rabs, through whom they were introduced into Europe. 2GREEK NOTATION The Greeks used an awkward notation for recording the results of counting.
(Typographical errors above are due to OCR software and don't occur in the book.)
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