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A Snake in the Hole

Author(s): 

A powerful, unvanquished, excellent black snake, 80 angulas in length, enters into a hole at the rate of 7 1/2 angulas in 5/14 of a day, and in the course of a day its tail grows 11/4 of an angula. Oh, ornament of arithmeticians, tell me by what time this serpent enters fully into the hole? (India, ca. 1150)

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Dummy View - NOT TO BE DELETED