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  2. Repeating decimal - Wikipedia

    en.wikipedia.org/wiki/Repeating_decimal

    0. 3: 1 0. 01: 2 ⁠ 1 / 4 ... of ⁠ 1 / p ⁠ is equal to the order of 10 modulo p. ... the multiples of ⁠ 1 / 13 ⁠ can be divided into two sets, with different ...

  3. Division by zero - Wikipedia

    en.wikipedia.org/wiki/Division_by_zero

    Division by zero. The reciprocal function y = ⁠ 1 x⁠. As x approaches zero from the right, y tends to positive infinity. As x approaches zero from the left, y tends to negative infinity. In mathematics, division by zero, division where the divisor (denominator) is zero, is a unique and problematic special case.

  4. 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.

  5. Fractional part - Wikipedia

    en.wikipedia.org/wiki/Fractional_part

    The fractional part or decimal part [1] of a non‐negative real number is the excess beyond that number's integer part. The latter is defined as the largest integer not greater than x, called floor of x or . Then, the fractional part can be formulated as a difference : For a positive number written in a conventional positional numeral system ...

  6. Ultraviolet - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet

    3.94–4.43, 0.631–0.710 Medium-wave UV, mostly absorbed by the ozone layer: intermediate UV; Dorno radiation. Ultraviolet C UVC 100–280 4.43–12.4, 0.710–1.987 Short-wave UV, germicidal UV, far-UVC, ionizing radiation at shorter wavelengths, completely absorbed by the ozone layer and atmosphere: hard UV. Near ultraviolet NUV 300–400

  7. Blood alcohol content - Wikipedia

    en.wikipedia.org/wiki/Blood_alcohol_content

    LOINC. 5639-0, 5640-8, 15120-9, 56478-1. Blood alcohol content ( BAC ), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes. [ 1] BAC is expressed as mass of alcohol per volume of blood.

  8. Orders of magnitude (length) - Wikipedia

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

    4.4 Tm – 29.4 au – Perihelion distance of Pluto; 4.5 Tm – 30.1 au – Distance between Neptune and the Sun; 4.5 Tm – 30.1 au – Inner radius of the Kuiper belt; 5.7 Tm – 38.1 au – Perihelion distance of Eris; 6.0 Tm – 40.5 au – Distance from Earth at which the Pale Blue Dot photograph was taken. 7.3 Tm – 48.8 au – Aphelion ...

  9. Division (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Division_(mathematics)

    In terms of partition, 20 / 5 means the size of each of 5 parts into which a set of size 20 is divided. For example, 20 apples divide into five groups of four apples, meaning that "twenty divided by five is equal to four". This is denoted as 20 / 5 = 4, or ⁠ 20 / 5 ⁠ = 4. [2] In the example, 20 is the dividend, 5 is the divisor, and 4 is ...