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  2. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/Multiplication_table

    Multiplication table. In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system. The decimal multiplication table was traditionally taught as an essential part of elementary arithmetic around the world, as it lays the foundation for ...

  3. Phrases from The Hitchhiker's Guide to the Galaxy - Wikipedia

    en.wikipedia.org/wiki/Phrases_from_The_Hitchhiker...

    The shape of the islands in the background spells out 42, and there are 42 coloured balls. The 42 Puzzle is a game devised by Douglas Adams in 1994 for the United States series of The Hitchhiker's Guide to the Galaxy books. The puzzle is an illustration consisting of 42 multi-coloured balls, in 7 columns and 6 rows.

  4. Multiplication sign - Wikipedia

    en.wikipedia.org/wiki/Multiplication_sign

    The multiplication sign (×), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication, which results in a product. [ 1 ] The symbol is also used in botany , in botanical hybrid names and the heavy goods vehicle industry, to calculate the amount of powered wheels.

  5. Time - Wikipedia

    en.wikipedia.org/wiki/Time

    Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, and into the future. [1] [2] [3] It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the ...

  6. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers. In English and many other languages, they are used to coin numerous series of words. For example: simplex, duplex (communication in only 1 direction at a time, in 2 directions simultaneously) unicycle, bicycle, tricycle (vehicle with 1 wheel, 2 wheels ...

  7. 9 - Wikipedia

    en.wikipedia.org/wiki/9

    9 is the sum of the cubes of the first two non-zero positive integers + which makes it the first cube-sum number greater than one. [6] It is also the sum of the first three nonzero factorials! +! +!, and equal to the third exponential factorial, since =. [7]

  8. Timeline for the day of the September 11 attacks - Wikipedia

    en.wikipedia.org/wiki/Timeline_for_the_day_of...

    9:28: Flight 93 is hijacked above northern Ohio, turning to the southeast. 9:37:46: Flight 77 crashes into the western side of The Pentagon. All 58 passengers and crew are killed aboard the aircraft including an additional 125 (including emergency workers) on the ground. The crash starts a violent fire.

  9. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The hours of operation signs are tables composed of two columns where the left column is the day of the week in Roman numerals and the right column is a range of hours of operation from starting time to closing time. In the example case (left), the business opens from 10 AM to 7 PM on weekdays, 10 AM to 5 PM on Saturdays and is closed on ...