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  2. Roblox - Wikipedia

    en.wikipedia.org/wiki/Roblox

    October 10, 2023 [8] Genre (s) Game creation system, massively multiplayer online. Mode (s) Single-player, multi-player. Roblox ( / ˈroʊblɒks / ROH-bloks) is an online game platform and game creation system developed by Roblox Corporation that allows users to program and play games created by themselves or other users.

  3. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

  4. Hydrogen peroxide - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_peroxide

    Hydrogen peroxide ( H2O2) is a nonplanar molecule with (twisted) C 2 symmetry; this was first shown by Paul-Antoine Giguère in 1950 using infrared spectroscopy. [9] [10] Although the O−O bond is a single bond, the molecule has a relatively high rotational barrier of 386 cm −1 (4.62 kJ / mol) for rotation between enantiomers via the trans ...

  5. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [1] The codes, developed during 1937–1940 and expanded in 1974 by the Association of Public-Safety Communications Officials-International (APCO), allow brevity and standardization of message traffic.

  6. Islam - Wikipedia

    en.wikipedia.org/wiki/Islam

    Most estimates indicate China has approximately 20 to 30 million Muslims (1.5% to 2% of the population). [308] [309] Islam in Europe is the second-largest religion after Christianity in many countries, with growth rates due primarily to immigration and higher birth rates of Muslims in 2005, [310] accounting for 4.9% of all of Europe's ...

  7. List of countries by number of billionaires - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Per Forbes (April 2024); Rank Rank per capita Country/Territory Billionaires Rate - World 2,781: 0.343 1 11 United States 813: 2.420 2 53 China 406: 0.288 3 58 India 200: 0.144 4

  8. Inflation is up 20% since Biden took office - AOL

    www.aol.com/finance/inflation-20-since-biden...

    May 20, 2024 at 6:00 AM. ... World War II veterans take off for France for 80th anniversary of D-Day. Sports. Sports. Raleigh News and Observer.

  9. Acetic acid - Wikipedia

    en.wikipedia.org/wiki/Acetic_acid

    Acetic acid (data page) Acetic acid / əˈsiːtɪk /, systematically named ethanoic acid / ˌɛθəˈnoʊɪk /, is an acidic, colourless liquid and organic compound with the chemical formula CH3COOH (also written as CH3CO2H, C2H4O2, or HC2H3O2 ).

  10. 20 (number) - Wikipedia

    en.wikipedia.org/wiki/20_(number)

    Twenty is a pronic number, as it is the product of consecutive integers, namely 4 and 5. [3] It is the third composite number to be the product of a squared prime and a prime (and also the second member of the 22 × q family in this form). It has an aliquot sum of 22; a semiprime, within an aliquot sequence of four composite numbers (20, 22, 14 ...

  11. Precision and recall - Wikipedia

    en.wikipedia.org/wiki/Precision_and_recall

    In pattern recognition, information retrieval, object detection and classification (machine learning), precision and recall are performance metrics that apply to data retrieved from a collection, corpus or sample space . Precision (also called positive predictive value) is the fraction of relevant instances among the retrieved instances.