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  2. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  3. Decimal time - Wikipedia

    en.wikipedia.org/wiki/Decimal_time

    3 different representations of 3 hours 86 minutes decimal time by Delambre (9:15:50 a.m.) The colon (:) was not yet in use as a unit separator for standard times, and is used for non-decimal bases. The French decimal separator is the comma (,), while the period (.), or "point", is used in English. Units were either written out in full, or ...

  4. Mathcounts - Wikipedia

    en.wikipedia.org/wiki/Mathcounts

    In Mathcounts, there are four different rounds. There are the Team, Target, Sprint, and Countdown Round. You are only permitted to use a calculator in the Team Round and Target Round. Calculators are not permitted for the Sprint Round. The Sprint Round has around 30 questions and aims to test how well you can compute without a calculator.

  5. 24-hour clock - Wikipedia

    en.wikipedia.org/wiki/24-hour_clock

    24-hour digital clock in Miaoli HSR station. A public 24-hour clock in Curitiba, Brazil, with the hour hand on the outside and the minute hand on the inside.. A time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since midnight, mm (00 to 59) is the number of ...

  6. Carnegie Unit and Student Hour - Wikipedia

    en.wikipedia.org/wiki/Carnegie_Unit_and_Student_Hour

    The Student Hour is approximately 12 hours of class or contact time, approximately 1/10 of the Carnegie Unit (as explained below). As it is used today, a Student Hour is the equivalent of one hour (50 minutes) of lecture time for a single student per week over the course of a semester, usually 14 to 16 weeks.

  7. Hour - Wikipedia

    en.wikipedia.org/wiki/Hour

    An hour (symbol: h; [1] also abbreviated hr) is a unit of time historically reckoned as 1 ⁄ 24 of a day and defined contemporarily as exactly 3,600 seconds . There are 60 minutes in an hour, and 24 hours in a day. The hour was initially established in the ancient Near East as a variable measure of 1 ⁄ 12 of the night or daytime.