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  2. Percentage - Wikipedia

    en.wikipedia.org/wiki/Percentage

    In mathematics, a percentage (from Latin per centum 'by a hundred') is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign (%), [ 1] although the abbreviations pct., pct, and sometimes pc are also used. [ 2] A percentage is a dimensionless number (pure number), primarily used for expressing proportions ...

  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. Divisibility rule - Wikipedia

    en.wikipedia.org/wiki/Divisibility_rule

    Therefore, divisibility by 2, 5, and 10 only depend on whether the last 1 digit is divisible by those divisors. The factors of 10 2 include 4 and 25, and divisibility by those only depend on the last 2 digits. Case where only the last digit(s) are removed. Most numbers do not divide 9 or 10 evenly, but do divide a higher power of 10 n or 10 n ...

  5. 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 ...

  6. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    Likewise, 14 is a multiple of 2, so the product should be even. Furthermore, any number which is a multiple of both 5 and 2 is necessarily a multiple of 10, and in the decimal system would end with a 0. The correct answer is 210. It is a multiple of 10, 7 (the other prime factor of 14) and 3 (the other prime factor of 15).

  7. List of Christian denominations by number of members

    en.wikipedia.org/wiki/List_of_Christian...

    Evangelical Church in Germany – 10.8 million, [84] with the remainder of the denominations's 19.2 million members being non-Lutheran; Ethiopian Evangelical Church Mekane Yesus – 10.4 million [85] Evangelical Lutheran Church in Tanzania – 7.9 million [86] Church of Sweden – 5.5 million [87] [88]

  8. List of countries by suicide rate - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Canada, a country with a comparatively low suicide rate overall at 10.3 incidents per 100,000 people, exhibits one such discrepancy. When comparing the suicide rate of Indigenous peoples in Canada , the rate of suicide increases to 24.3 incidents per 100,000 people: [ 17 ] a rate among the ten highest in the world.

  9. Fatigue - Wikipedia

    en.wikipedia.org/wiki/Fatigue

    A 2021 German study found that fatigue was the main or secondary reason for 10–20% of all consultations with a primary care physician. [ 206 ] A large study based on the 2004 Health and Retirement Study (HRS), a biennial longitudinal survey of US adults aged 51 and above, with mean age 65, found that 33% of women and 29% of men self-reported ...