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  2. HP 35s - Wikipedia

    en.wikipedia.org/wiki/HP_35s

    The calculator may be set to automatically display values as mixed fractions by toggling the FDISP key. The maximum denominator may be specified using the /c function. Numbered flags may be set to specify which of three denominator systems is to be used: most precise denominator, factors of the maximum (for example 2, 4, 8, 16, when the maximum ...

  3. Single-precision floating-point format - Wikipedia

    en.wikipedia.org/wiki/Single-precision_floating...

    Consider a real number with an integer and a fraction part such as 12.375; Convert and normalize the integer part into binary; Convert the fraction part using the following technique as shown here; Add the two results and adjust them to produce a proper final conversion; Conversion of the fractional part: Consider 0.375, the fractional part of ...

  4. Repeating decimal - Wikipedia

    en.wikipedia.org/wiki/Repeating_decimal

    Conversely the period of the repeating decimal of a fraction ⁠ c / d ⁠ will be (at most) the smallest number n such that 10 n − 1 is divisible by d. For example, the fraction ⁠ 2 / 7 ⁠ has d = 7, and the smallest k that makes 10 k − 1 divisible by 7 is k = 6, because 999999 = 7 × 142857. The period of the fraction ⁠ 2 / 7 ⁠ is ...

  5. Rounding - Wikipedia

    en.wikipedia.org/wiki/Rounding

    Approximating a rational number by a fraction with smaller denominator 399 / 941 3 / 7 1-digit-denominator Approximating a fraction by a fractional decimal number: 5 / 3 1.6667: 4 decimal places: Approximating a fractional decimal number by one with fewer digits 2.1784: 2.18 2 decimal places

  6. Factorial - Wikipedia

    en.wikipedia.org/wiki/Factorial

    Multiply together the results of the two previous steps The product of all primes up to n {\displaystyle n} is an O ( n ) {\displaystyle O(n)} -bit number, by the prime number theorem , so the time for the first step is O ( n log 2 ⁡ n ) {\displaystyle O(n\log ^{2}n)} , with one logarithm coming from the divide and conquer and another coming ...

  7. Binary number - Wikipedia

    en.wikipedia.org/wiki/Binary_number

    The base-2 numeral system is a positional notation with a radix of 2.Each digit is referred to as a bit, or binary digit.Because of its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used by almost all modern computers and computer-based devices, as a preferred system of use, over various other human techniques of communication, because ...

  8. Social Security debate in the United States - Wikipedia

    en.wikipedia.org/wiki/Social_Security_debate_in...

    In other words, that amount would have to be set aside in 2016 so that the principal and interest would cover the shortfall for 75 years. The estimated annual shortfall averages 2.49% of the payroll tax base or 0.9% of gross domestic product (a measure of the size of the economy).

  9. Approximations of π - Wikipedia

    en.wikipedia.org/wiki/Approximations_of_π

    It is equal to + / + /, which is accurate to two sexagesimal digits. The Chinese mathematician Liu Hui in 263 CE computed π to between 3.141 024 and 3.142 708 by inscribing a 96-gon and 192-gon; the average of these two values is 3.141 866 (accuracy 9·10 −5). He also suggested that 3.14 was a good enough approximation for practical purposes.