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  2. Countdown (game show) - Wikipedia

    en.wikipedia.org/wiki/Countdown_(game_show)

    Lead. The programme was presented by Richard Whiteley for 23 years until his death in June 2005. It was then presented by Des Lynam from October 2005 until December 2006, Des O'Connor from January 2007 until December 2008, Jeff Stelling from January 2009 until December 2011 and Nick Hewer from January 2012 until June 2021, with Colin Murray standing in for Nick Hewer during part of the COVID ...

  3. Mathcounts - Wikipedia

    en.wikipedia.org/wiki/Mathcounts

    mathcounts .org. Mathcounts, stylized as MATHCOUNTS, is a non-profit organization that provides grades 6-8 extracurricular mathematics programs in all U.S. states, plus the District of Columbia, Puerto Rico, Guam and U.S. Virgin Islands. Its mission is to provide engaging math programs for middle school students of all ability levels to build ...

  4. 8 Out of 10 Cats Does Countdown - Wikipedia

    en.wikipedia.org/.../8_Out_of_10_Cats_Does_Countdown

    Countdown. 8 Out of 10 Cats Does Countdown is a British comedy panel show on Channel 4. The show follows the game of Countdown, but presented in a comedic panel show format seen on 8 Out of 10 Cats, with the show being a crossover of the two. The show is hosted by Jimmy Carr, with Rachel Riley and Susie Dent assuming their Countdown roles.

  5. Timer - Wikipedia

    en.wikipedia.org/wiki/Timer

    A timer or countdown timer is a type of clock that starts from a specified time duration and stops when reaching 00:00. A simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software . Stopwatches operate in the opposite direction, downwards from 00:00, measuring elapsed ...

  6. Leap second - Wikipedia

    en.wikipedia.org/wiki/Leap_second

    Screenshot of the UTC clock from time.gov during the leap second on 31 December 2016.. A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC), to accommodate the difference between precise time (International Atomic Time (TAI), as measured by atomic clocks) and imprecise observed solar time (), which varies due to irregularities and long-term ...

  7. HP-12C - Wikipedia

    en.wikipedia.org/wiki/HP-12C

    Power consumption. 0.25 mW. Weight. 113 g. Dimensions. 128 × 79 × 15 mm. The HP-12C is a financial calculator made by Hewlett-Packard (HP) and its successor HP Inc. as part of the HP Voyager series, introduced in 1981. It is HP's longest and best-selling product and is considered the de facto standard among financial professionals.

  8. List of poker variants - Wikipedia

    en.wikipedia.org/wiki/List_of_poker_variants

    The card game of poker has many variations, most of which were created in the United States in the mid-1800s through the early 1900s. The standard order of play applies to most of these games, but to fully specify a poker game requires details about which hand values are used, the number of betting rounds, and exactly what cards are dealt and what other actions are taken between rounds.

  9. Doomsday Clock - Wikipedia

    en.wikipedia.org/wiki/Doomsday_Clock

    Doomsday Clock. The Doomsday Clock is a symbol that represents the likelihood of a human-made global catastrophe, in the opinion of the members of the Bulletin of the Atomic Scientists. [1] Maintained since 1947, the clock is a metaphor, not a prediction, for threats to humanity from unchecked scientific and technological advances.