Please welcome Chromium v.20! Chrome is now “twenty something” . Here is a little bit about 20 for now. I will bring you more stuff being developed for v.20 in coming days. Stay tuned!

It is at this point that a person is no longer a teenager.
The number of twenty can also be called a score (

chrome news  20 Something Chrome   Not A Teenager Anymore!

20 is the only number with more than one digit that can be written from base 2 to base 20 using only the digits 0 to 9
The atomic number of calcium.
The third magic number in physics.

A denomination of Pound sterling featuring Adam Smith’s portrait
A denomination of $US featuring Andrew Jackson’s portrait

20 is the number of quarter or half turns required to optimally solve a Rubik’s cube in the worst case.
An icosahedron has 20 faces. A dodecahedron has 20 vertices.
In the roleplaying game Dungeons and Dragons (as well as other RPGs that use twenty-sided dice), twenty-sided dice play a pivotal role in gameplay, and to “roll a twenty” is significant to the point that it is sometimes used in other, usually related, contexts, similar to the use of “doubles” in reference to Monopoly.
Twenty questions is a popular party game

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” (Note that this applies only to countries using the Imperial system. The metric equivalent is 6/6). When someone is able to see only after an event how things turned out, that person is often said to have had “20/20 hindsight”.
20/20 is a late-night newsmagazine program on ABC-TV