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  2. International Mathematical Olympiad - Wikipedia

    en.wikipedia.org/wiki/International_Mathematical...

    The content ranges from extremely difficult algebra and pre-calculus problems to problems in branches of mathematics not conventionally covered in secondary or high school and often not at university level either, such as projective and complex geometry, functional equations, combinatorics, and well-grounded number theory, of which extensive knowledge of theorems is required.

  3. N5 (song) - Wikipedia

    en.wikipedia.org/wiki/N5_(song)

    "N5" is a pop song with elements of house and flamenco. [2] The incorporation of elements of Spanish culture into her music is only natural as Lali had settled in Spain between 2019 and 2022 to film Sky Rojo. In fact, Lautaro Furiolo, the director of the single's music video, revealed that Lali wrote the song with the Madrilenian night in mind. [3]

  4. Group of Five - Wikipedia

    en.wikipedia.org/wiki/Group_of_Five

    The concept of a forum for the world's major industrialized democracies emerged following the 1973 oil crisis and subsequent global recession.In 1974 the United States created the informal Library Group, an unofficial gathering of senior financial officials from France, Japan, the United Kingdom, the United States, and West Germany.

  5. Nigerien crisis (2023–2024) - Wikipedia

    en.wikipedia.org/wiki/Nigerien_crisis_(2023–2024)

    On 26 July 2023, a coup d'état occurred in Niger, during which the country's presidential guard removed and detained president Mohamed Bazoum.Subsequently, General Abdourahamane Tchiani, the Commander of the Presidential Guard, proclaimed himself the leader of the country and established the National Council for the Safeguard of the Homeland, after confirming the success of the coup.

  6. Japanese-Language Proficiency Test - Wikipedia

    en.wikipedia.org/wiki/Japanese-Language...

    The overall pass mark depends on the level, and varies between 100/180 (55.55%) for the N1 and 80/180 (44.44%) for the N5. Meanwhile, scores of at least 31.67% are required for each section in order to ensure that test takers cannot pass by doing very well on one section and very poorly on another.

  7. Black–Litterman model - Wikipedia

    en.wikipedia.org/wiki/Black–Litterman_model

    In finance, the Black–Litterman model is a mathematical model for portfolio allocation developed in 1990 at Goldman Sachs by Fischer Black and Robert Litterman.It seeks to overcome problems that institutional investors have encountered in applying modern portfolio theory in practice.

  8. Philosophical skepticism - Wikipedia

    en.wikipedia.org/wiki/Philosophical_skepticism

    Skepticism can be classified according to its scope. Local skepticism involves being skeptical about particular areas of knowledge (e.g. moral skepticism, skepticism about the external world, or skepticism about other minds), whereas radical skepticism claims that one cannot know anything—including that one cannot know about knowing anything.

  9. Comparison of the AK-47 and M16 - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_the_AK-47...

    The German Sturmgewehr 44. The Germans pioneered the assault rifle concept during World War II, based upon research that showed that most firefights happen within 400 meters and that contemporary rifles were overpowered for most small arms combat.