The Liber abaci, which fills 459 printed pages, contains the most perfect methods of calculating with whole numbers and with fractions, practice, extraction of the square and cube roots, proportion, chain rule, finding of proportional parts, averages, progressions, even compound interest, just as in the completest mercantile arithmetics of our days. [Please select]
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"In all the arithmetics six beats five, and seven beats six." [Please select]
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The oldest produced their geographies and arithmetics and showed her how far they had gone. [Please select]
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