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  2. 17-animal inheritance puzzle - Wikipedia

    en.wikipedia.org/wiki/17-animal_inheritance_puzzle

    A variant of the story has been told with 11 camels, to be divided into 12, 14, and 16. [ 22 ] [ 23 ] Another variant of the puzzle appears in the book The Man Who Counted , a mathematical puzzle book originally published in Portuguese by Júlio César de Mello e Souza in 1938.

  3. List of smart cities - Wikipedia

    en.wikipedia.org/wiki/List_of_smart_cities

    The Institute for Management Development and Singapore University of Technology and Design rank cities in the Smart City Index according to technological, economic and human criteria (e.g., the quality of life, the environment and inclusiveness). In the Smart City Index 2023, the top 15 smart cities were, in order, Zürich, Oslo, Canberra ...

  4. List of countries by population (United Nations) - Wikipedia

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

    Statistical subregions as defined by the United Nations Statistics Division [1] This is a list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects. It presents population estimates from 1950 to the present. [2]

  5. 10 Hard Math Problems That Even the Smartest People in the ...

    www.aol.com/10-hard-math-problems-even-150000090...

    Even numbers are always 0, 2, or 4 more than a multiple of 6, while odd numbers are always 1, 3, or 5 more than a multiple of 6. Well, one of those three possibilities for odd numbers causes an issue.

  6. Nations and IQ - Wikipedia

    en.wikipedia.org/wiki/Nations_and_IQ

    Nations and IQ. The relationship between nations and IQ is a controversial area of study concerning differences between nations in average intelligence test scores, their possible causes, and their correlation with measures of social well-being and economic prosperity. This debate started in the early 2000's after Richard Lynn and Tatu Vanhanen ...

  7. List of WLAN channels - Wikipedia

    en.wikipedia.org/wiki/List_of_WLAN_channels

    Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.

  8. World Tourism rankings - Wikipedia

    en.wikipedia.org/wiki/World_Tourism_rankings

    In 2023 there were 1.3 billion international tourists, with a growth of 33,4% compared to 2022 and growth of 112.2% compared to 2021. [1] The top 10 international tourism destinations in 2023 were: [ 2 ] [ 3 ]

  9. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.