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In some countries, the number 20 is used as an index in measuring visual acuity. 20/20 indicates normal vision at 20 feet, although it is commonly used to mean "perfect vision" in countries using the Imperial system. (The metric equivalent is 6/6.)
20 (dua puluh) ialah nombor selepas 19 dan sebelum 21. Faktor nombor perdana 20 ialah 2, 2, dan 5. (2 * 2 * 5 = 20) Peristilahan
Learn about the properties, factors, and uses of the number 20 in different systems and languages. Find out why 20 is an abundant number, a base 20 system, and a polyhedron.
Learn the definition, pronunciation and usage of the number 20 in English. See examples, synonyms, translations and related words for twenty.
Jun 12, 2024 · Twenty is the number that is after nineteen and before twenty-one. The prime factors of twenty are 2 and 5. (2 * 2 * 5 = 20) Its factors are: 1, 2, 4, 5, 10, and 20. As the sum of its factors is more than itself (i.e. 22), it can be referred to as an abundant number. 20 can been used as a number base.
Learn how to find the factors of 20 using different methods, such as factorization, division and prime factorization. See the positive and negative pair factors of 20, and the common factors of 20 with other numbers.
Learn the meaning, history, and usage of the word twenty, a number equal to two times 10. See examples, synonyms, phrases, and related words for twenty.
