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  2. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    In the above example, the ratio of yellow cars to all the cars on the lot is 4:12 or 1:3. ... which is the equivalent of 6 1 2 1 11 4 5 9. and would be ...

  3. Duodecimal - Wikipedia

    en.wikipedia.org/wiki/Duodecimal

    The duodecimal system, also known as base twelve or dozenal, is a positional numeral system using twelve as its base.In duodecimal, the number twelve is denoted "10", meaning 1 twelve and 0 units; in the decimal system, this number is instead written as "12" meaning 1 ten and 2 units, and the string "10" means ten.

  4. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    In Latin and Greek, the ordinal forms are also used for fractions for amounts higher than 2; only the fraction ⁠ 1 / 2 ⁠ has special forms. The same suffix may be used with more than one category of number, as for example the orginary numbers second ary and terti ary and the distributive numbers bi nary and ter nary .

  5. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    1. Means "less than or equal to". That is, whatever A and B are, A ≤ B is equivalent to A < B or A = B. 2. Between two groups, may mean that the first one is a subgroup of the second one. ≥ 1. Means "greater than or equal to". That is, whatever A and B are, A ≥ B is equivalent to A > B or A = B. 2.

  6. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    Since about 2% of the human body mass is calcium, and Sr-90 has a half-life of 28.78 years, releasing 6.697+2.282 MeV per disintegration, this works out to about 1.065 × 10 −12 grays per second. The permissible body burden was established at 1,000 S.U.

  7. Semitone - Wikipedia

    en.wikipedia.org/wiki/Semitone

    Each semitone is equal to one twelfth of an octave. This is a ratio of 2 1/12 (approximately 1.05946), or 100 cents, and is 11.7 cents narrower than the 16:15 ratio (its most common form in just intonation, discussed below). All diatonic intervals can be expressed as an equivalent number of semitones. For instance a major sixth equals nine ...

  8. 4/20 - 5/20. gemini. 5/21 - 6/20. cancer. 6/21 - 7/22. leo. 7/23 - 8/22. virgo. 8/23 - 9/22. libra. 9/23 - 10/22. scorpio. 10/23 - 11/21. sagittarius. 11/22 - 12/21. capricorn. 12/22 - 1/19 ...

  9. List of meantone intervals - Wikipedia

    en.wikipedia.org/wiki/List_of_meantone_intervals

    The following is a list of intervals of extended meantone temperament.These intervals constitute the standard vocabulary of intervals for the Western common practice era. . Here 12 EDO refers to the size of the interval in the temperament with 12 equal divisions of the octave, which is the most common meantone temperament in the modern era, 19 EDO to 19 equal temperament, 31 EDO to 31 equal ...