In some countries, the number 20 is used as an index in measuring visual acuity. 20/20 indicates normal vision at 20 feet (6.1 m), although it is commonly used to mean "perfect vision" in countries using the …

Jan 4, 2014 · Watch the official 20/20 online at ABC.com. Get exclusive videos, blogs, photos, cast bios, free episodes

Middle English, from twenty, adjective, from Old English twēntig, noun, group of 20, from twēn- (akin to Old English twā two) + -tig group of 10; akin to Old English tīen ten — more at two, ten

The meaning of the number 20: How is 20 spell, written in words, interesting facts, mathematics, computer science, numerology, codes. Phone prefix +20 or 0020. 20 in Roman Numerals and images.

Nov 20, 2020 · 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.

Jul 11, 2023 · Delve into the intriguing world of the number 20 with these 20 captivating facts. Explore its significance in various fields and uncover hidden connections.

In general, the number 20 represents quantity or value in mathematics, counting, measurements, and various other fields. 20 The number 20 is a positive integer that falls between 19 and 21. It is …

Feb 5, 2026 · Explore the hidden nature of 20, an even number composed of two distinct primes multiplied together. Includes Prime Factorization, Divisors, Bases and Fun Facts for students, …

Find out how and where to watch "20/20" online on Netflix, Prime Video, and Disney+ today – including 4K and free options.

In English, we sometimes say "score" for 20, like "fourscore and seven years ago" (which means 87 years). In French, the number 80 is "quatre-vingts," which literally means "four twenties."