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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.)
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May 11, 2018 · In-App Purchase includes a Starter Pack unlocking numbers 6-25 for USD5.99 and USD 7.99 for numbers 26-100. Alternatively parents can purchase the entire number pack of 1-100 for USD11.99 which ...
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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.
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- The factors of 20 are 1, 2, 4, 5, 10 and 20.
- The prime factorization of 20 is 2 × 2 × 5 or 2 2 × 5.
- The positive pair factors of 20 are (1, 20), (2, 10) and (4, 5).
- The negative pair factors of 20 are (-1, -20), (-2, -10) and (-4, -5).
- Yes, 5 is a factor of 20. If 5 divides 20, it leaves the remainder 0, and hence 5 is a factor of 20.
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.
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