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One half is the rational number that lies midway between 0 and 1 on the number line. Multiplication by one half is equivalent to division by two, or "halving"; conversely, division by one half is equivalent to multiplication by two, or "doubling".
The number π (/ p aɪ / ⓘ; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter.It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.
Under-five mortality rate per 1,000 live births (OECD-World Bank, 2020) LOCATION 2020 rate Australia 3.7 Austria 3.6 Belgium 4.2 Canada 5.0 Chile 6.8 Colombia 13.2 ...
This list of countries by life expectancy provides a comprehensive list of countries alongside their respective life expectancy figures. The data is differentiated by sex, presenting life expectancies for males, females, and a combined average.
Estimation of the World Bank Group for 2022. [2] [3] [4] The data is filtered according to the list of countries in Europe.In the World Bank Group list and, accordingly, in this list, there are no mini-states with a population of several tens of thousands of people (Andorra, Monaco, San Marino, Vatican City).
In May 2017, they reported that income shares for those in the bottom half stagnated and declined from 1980 to 2014. Their share declined from 20% in 1980 to 12% in 2014, while the top 1% share grew from 12% in 1980 to 20%. The top 1% then made on average 81 times more than the bottom 50%, while in 1981 they made 27 times more.
As of 2020, the global sex ratio is approximately 1.01 males to 1 female. [72] Approximately 24.7% of the global population is aged under 15, while 65.2% is aged 15–64 and 10.1% is aged 65 or over. [72] The median age of the world's population is estimated to be 31 years in 2020, [9] and is expected to rise to 37.9 years by 2050. [73]
Estimation of the World Bank Group for 2022. [2] [3] [4] The data is filtered according to the list of countries in Africa.The values in the World Bank Group tables are rounded.