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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
The horizontal fraction bar was introduced by the Arabs.
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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