What is the name of the mathematical concept that describes a value that never changes, like the ratio of a circle's circumference to its diameter? [#1259]

A constant is a mathematical concept that represents a value that remains unchanged, like pi (π), which is approximately 3.14 and never changes.

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A constant is a mathematical concept that represents a value that remains unchanged, like pi (π), which is approximately 3.14 and never changes.

The Aam Aadmi Party is a political party in India. It was founded on 26 November 2012 by Arvind Kejriwal and his then-companions, following the 2011 Indian anti-corruption movement.

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The Aam Aadmi Party is a political party in India. It was founded on 26 November 2012 by Arvind Kejriwal and his then-companions, following the 2011 Indian anti-corruption movement.

Saturn's ring system is one of the most extensive and visible in our solar system, composed of seven main rings and numerous smaller ringlets. The rings are made up of ice particles and rock debris.

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Saturn's ring system is one of the most extensive and visible in our solar system, composed of seven main rings and numerous smaller ringlets. The rings are made up of ice particles and rock debris.

6²-1 : 6 = 35 : 6 11²-1 : 11 = 120 : 11

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6²-1 : 6 = 35 : 6 11²-1 : 11 = 120 : 11

BRICS is an acronym for Brazil, Russia, India, China, and South Africa. The term was initially created as BRIC (without South Africa) by Goldman Sachs economist Jim O'Neill in 2001. He believed that by 2050 the four BRIC economies would come to dominate the global economy. South Africa was added to the list in 2010.

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BRICS is an acronym for Brazil, Russia, India, China, and South Africa. The term was initially created as BRIC (without South Africa) by Goldman Sachs economist Jim O'Neill in 2001. He believed that by 2050 the four BRIC economies would come to dominate the global economy. South Africa was added to the list in 2010.

Indonesia is the world's largest island country by area (1,904,569 sq km), and by total number of islands (17,504 islands). It is also the world's most populous island country, with a population of over 270 million (the fourth most populous country in the world, after India, China, and the United States).

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Indonesia is the world's largest island country by area (1,904,569 sq km), and by total number of islands (17,504 islands). It is also the world's most populous island country, with a population of over 270 million (the fourth most populous country in the world, after India, China, and the United States).

Maniram Dewan, also known as Maniram Dutta Baruah, was a prominent figure in Assam's history and a pioneer in the tea industry. He established his initial tea gardens in the areas of Sivasagar and Jorhat, which were then part of the unified Sivasagar district. These ventures marked the beginning of organized tea cultivation by indigenous Assamese individuals and contributed significantly to the growth of the tea industry in the region.

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Maniram Dewan, also known as Maniram Dutta Baruah, was a prominent figure in Assam's history and a pioneer in the tea industry. He established his initial tea gardens in the areas of Sivasagar and Jorhat, which were then part of the unified Sivasagar district. These ventures marked the beginning of organized tea cultivation by indigenous Assamese individuals and contributed significantly to the growth of the tea industry in the region.

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Area = πr² π1² : π3² = π1 : π9 = 1:9

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Area = πr² π1² : π3² = π1 : π9 = 1:9

Quantifiers, such as "some", "any", "much", "many", and "few", describe a noun or pronoun by indicating quantity or amount.

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Quantifiers, such as "some", "any", "much", "many", and "few", describe a noun or pronoun by indicating quantity or amount.

The United Nations Sustainable Development Solutions Network (UNSDSN) publishes the World Happiness Report (WHR) annually in partnership with Gallup, the Oxford Wellbeing Research Centre, and the WHR's Editorial Board. The report was launched in 2012 to support the UN's sustainable development goals.

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The United Nations Sustainable Development Solutions Network (UNSDSN) publishes the World Happiness Report (WHR) annually in partnership with Gallup, the Oxford Wellbeing Research Centre, and the WHR's Editorial Board. The report was launched in 2012 to support the UN's sustainable development goals.