Is 90's or '90s correct?
" '90s " or " 90s " , but never " 90's " , I would suggest. An apostrophe following a noun denotes ownership, or is a shortened form of "-is".
Numbers should be treated just like this.
John's gloves are blue.
- apostrophe for John; he owns the gloves no apostrophe for "gloves"; there are two of them. The '90s are years in the decade ending -90, so it's a plural.
so for '90s,
I like the music of the '90s.
The 90s' music is the best.
Assume you want to know if every number between 1 and 90 is a composite number. No, not every number between 1 and 90. Take 2 for instance. Then, 2 is prime since the factors of 2 are 1 and itself! * * * * * Assumed wrong! In the 90s refers to 90-99, but the answer is correct, because 97 is a prime.
No. 1994 is considered mid-'90s with 1995 and 1996. The exact middle of the 1990s is January 1, 1995. That implies 1993 is as close to the middle as 1996. (This is why 1993 is also sometimes considered mid-'90s.) And it implies 1994 is as close as 1995 to the middle. If you're dividing the '90s between early and late, and not considering a middle, then you'd place 1994 in the early section. (The early…
Some options for CD compilations featuring those great 90s dance music include for example the "Muchmusic Dance Mix" series and the "Dance Mix" series released by Canadian television station "MuchMusic". Another one would be the "Big Tunes Back 2 The 90s". Finally the compilation "NOW That's What I Call 90s Dance" should be considered.