The horizontal fraction bar was introduced by the Arabs.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
The patient is undergoing an allergy skin test by receiving subdermal inoculations of allergens. Inf
Tumor marker analysis of a patient with no evidence of disease monitored for tumor recurrence. The ...