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  2. American Mathematics Competitions - Wikipedia

    en.wikipedia.org/wiki/American_Mathematics...

    The AMC 10 and AMC 12 are 25 question, 75-minute multiple choice competitions in secondary school mathematics containing problems which can be understood and solved with precalculus concepts. The AMC 10 and AMC 12 are held annually in November. Calculators have not been allowed on the AMC 10/12 since 2008. [6]

  3. United States of America Mathematical Olympiad - Wikipedia

    en.wikipedia.org/wiki/United_States_of_America...

    Cutoffs, based on AMC 12 indices, are determined so that approximately 260-270 students qualify for the USAMO. Cutoffs, based on AMC 10 indices, are determined so that approximately 230-240 students qualify for the USAJMO. If a student took the AMC 10 and 12 (i.e. AMC 10A and 12B or AMC 12A and 10B) and qualified for both the USAMO and USAJMO ...

  4. American Invitational Mathematics Examination - Wikipedia

    en.wikipedia.org/wiki/American_Invitational...

    The American Invitational Mathematics Examination (AIME) is a selective and prestigious 15-question 3-hour test given since 1983 to those who rank in the top 5% on the AMC 12 high school mathematics examination (formerly known as the AHSME), and starting in 2010, those who rank in the top 2.5% on the AMC 10. Two different versions of the test ...

  5. AMC 12 - Wikipedia

    en.wikipedia.org/?title=AMC_12&redirect=no

    From Wikipedia, the free encyclopedia. Redirect page

  6. William Lowell Putnam Mathematical Competition - Wikipedia

    en.wikipedia.org/wiki/William_Lowell_Putnam...

    The William Lowell Putnam Mathematical Competition, often abbreviated to Putnam Competition, is an annual mathematics competition for undergraduate college students enrolled at institutions of higher learning in the United States and Canada (regardless of the students' nationalities).

  7. Australian Mathematics Competition - Wikipedia

    en.wikipedia.org/wiki/Australian_Mathematics...

    Wales award from 1978. The forerunner of the competition, first held in 1976, was open to students within the Australian Capital Territory, and attracted 1,200 entries.In 1976 and 1977, the outstanding entrants were awarded the Burroughs medal.

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  9. Harmonic mean - Wikipedia

    en.wikipedia.org/wiki/Harmonic_mean

    In mathematics, the harmonic mean is a kind of average, one of the Pythagorean means.. It is the most appropriate average for ratios and rates such as speeds, [1] [2] and is normally only used for positive arguments.