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  2. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/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 arithmetic operations ...

  3. Orders of magnitude (numbers) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(numbers)

    1/52! chance of a specific shuffle Mathematics: The chances of shuffling a standard 52-card deck in any specific order is around 1.24 × 10 −68 (or exactly 1 ⁄ 52!) [4] Computing: The number 1.4 × 10 −45 is approximately equal to the smallest positive non-zero value that can be represented by a single-precision IEEE floating-point value.

  4. Combination - Wikipedia

    en.wikipedia.org/wiki/Combination

    In mathematics, a combination is a selection of items from a set that has distinct members, such that the order of selection does not matter (unlike permutations).For example, given three fruits, say an apple, an orange and a pear, there are three combinations of two that can be drawn from this set: an apple and a pear; an apple and an orange; or a pear and an orange.

  5. 420 (cannabis culture) - Wikipedia

    en.wikipedia.org/wiki/420_(cannabis_culture)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 February 2025. Number referring to cannabis 420 originally "4:20 Louis" Statue of Louis Pasteur at San Rafael High School, by Benny Bufano (1940), site of the earliest 4:20 gatherings in 1971 Observed by Cannabis counterculture, legal reformers, entheogenic spiritualists, and general users of cannabis ...

  6. List of musical works in unusual time signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_musical_works_in...

    This is a list of musical compositions or pieces of music that have unusual time signatures. "Unusual" is here defined to be any time signature other than simple time signatures with top numerals of 2, 3, or 4 and bottom numerals of 2, 4, or 8, and compound time signatures with top numerals of 6, 9, or 12 and bottom numerals 4, 8, or 16.

  7. 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 .

  8. Quintuple meter - Wikipedia

    en.wikipedia.org/wiki/Quintuple_meter

    4 time, alternating several times with 3 4 time. [80] A fourth example from Ravel is a particularly intense, if brief use of quintuples for symbolic purposes. This is Frontispice for two pianos (1918), written at the request of Ricciotto Canudo to accompany a philosophical meditation on World War I, titled S.P. 503, le poème du Vardar. Canudo ...

  9. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    One place at a time is handled, left to right. Example: 4075 − 1844 ----- Thousands: 4 − 1 = 3, look to right, 075 < 844, need to borrow. 3 − 1 = 2, say "Two thousand". One is performing 3 - 1 rather than 4 - 1 because the column to the right is going to borrow from the thousands place.