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It took over two million years of human prehistory and history for the human population to reach one billion and only 207 years more to grow to 7 billion. [154] The combined biomass of the carbon of all the humans on Earth in 2018 was estimated at 60 million tons, about 10 times larger than that of all non-domesticated mammals. [146]
[7] Arithmetic is closely related to number theory and some authors use the terms as synonyms. [8] However, in a more specific sense, number theory is restricted to the study of integers and focuses on their properties and relationships such as divisibility, factorization, and primality. [9] Traditionally, it is known as higher arithmetic. [10]
Azerbaijan, [a] officially the Republic of Azerbaijan, [b] is a transcontinental and landlocked country at the boundary of West Asia and Eastern Europe. [10] It is a part of the South Caucasus region and is bounded by the Caspian Sea to the east, Russia's republic of Dagestan to the north, Georgia to the northwest, Armenia and Turkey to the west, and Iran to the south.
This is the only non-trivial cube of the form x 2 + x − 1, for x = 36. 1332 = pronic number [51] 1333 = 37 2 - 37 + 1 = H 37 (the 37th Hogben number) [165] 1334 = maximal number of regions the plane is divided into by drawing 37 circles [206] 1335 = pentagonal number, [73] Mertens function zero; 1336 = sum of gcd(x, y) for 1 <= x, y <= 24 ...
A chemical element is a chemical substance whose atoms all have the same number of protons.The number of protons is called the atomic number of that element. For example, oxygen has an atomic number of 8, meaning each oxygen atom has 8 protons in its nucleus.
Between 1951 and 2017, Pakistan's population expanded over sixfold, going from 33.7 million to 207.7 million. The country has a relatively high, although declining, growth rate supported by high birth rates and low death rates. Between 1998 and 2017, the average annual population growth rate stood at +2.40%.
Ahmedabad (/ ˈ ɑː m ə d ə b æ d,-b ɑː d / AH-mə-də-ba(h)d), also spelled as Amdavad (Gujarati: [ˈəmd̪ɑʋɑd̪]), is the most populous city in the Indian state of Gujarat.It is the administrative headquarters of the Ahmedabad district and the seat of the Gujarat High Court.