Recreations in Mathematics (Classic Reprint) - Couverture souple

Licks, H. E.

 
9781330867914: Recreations in Mathematics (Classic Reprint)

Présentation de l'éditeur

From the ten fingers arose [y the dedmal 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 angle stroke I was made, for two things two strokes II were used, and so on up to ten which was represented by O. Then eleven was written I fl, twelve 11 n, and so on up to twenty, or two tens, which was represented by nn. In this way the numeratitm proceeded up to a hundred, for which another symbol was emplied. Names for II, III, lilt, nfl, 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 Eun. 2GREBE nOTATIOH The Greeks xised an awkward notation for recording the results of cotmtii.
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