history of numerals opp
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THE BRAHMI NUMERALS"
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About in the seventh century the separate strokes in the numerals for two and three became joined together into later forms, known as the Nagari numerals. These numerals show some striking likeness to our own.
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Numerals, a time travel from India to EuropeThe discovery of zero and the place-value system were inventions unique to the Indian civilization. As the Brahmi notation of the first 9 whole numbers...
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The graphical origin of the Roman numbers
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a) The Mayan base-20 numeral system
The Mayan base-20 numeral system
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The figures shown below indicate numbers from 0 to 10
The figures shown below indicate numbers from 0 to 10
The figures shown below indicate numbers from 0 to 10
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Chinese Numbers
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The Chineses also had several other ways to represent numbers. The strange geometric figures shown below indicate the numbers 1 through 10. This numeration style - named shang fang da zhuan - is still used in official seals.
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Early Egyptian Fractions
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Math-trick: Four equals three!Suppose: a + b = c .This can also be written as:4a - 3a + 4b - 3b = 4c - 3c .After reorganizing:4a + 4b - 4c = 3a + 3b - 3c .Take the constants out of the brackets:4(a + b - c) = 3(a + b - c) .Remove the same term left and right, then:4 = 3Where is the error?