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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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Add to word list. A1. the number 20: nineteen, twenty, twenty-one. space for twenty people. See also. score noun (TWENTY) Fewer examples. It takes me twenty minutes to get to work.
20 (number) 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.
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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.
Factors of 20 are the numbers that divide 20 completely without leaving any remainder. 4 and 5 are the factors of 20, that is, 5 divides 20 into equal parts of 4 each. 20 does not have 4 and 5 as its only factors.
a number equal to two times 10; the numbers 20 to 29; specifically : the years 20 to 29 in a lifetime or century; a 20-dollar bill… See the full definition
Sep 28, 2023 · Number 20 plays a huge part in numerology, society, games and much more - that's why we've put together twenty awesome facts all about this special number.
