Numbers 90-99

A page of the Numeropedia - the Special Encyclopedia of Numbers

[90-99]90 - 91 - 92 - 93 - 94 - 95 - 96 - 97 - 98 - 99

All Numbers  &  [0-9]  & 10-19  20-29  30-39  40-49  50-59  60-69  70-79  80-89  90-99  100

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q - ...

(For separate numbers: 90 - 91 - 92 - 93 - 94 - 95 - 96 - 97 - 98 - 99)

 

90-99

[Language] Nonagenarian is a person whose age is 90 to 99 years old.

 

[Sport]  The jersey numbers most usually worn by American football players in the linebackers and defensive line (defensive ends, defensive tackles and nose guard)positions.

 

90--91 (and 87, 88 & 89)

[Tech.]  Octane (R+M)/2 antiknock index rating of unleaded gasoline for automobiles in the U.S.: 87, 88, 89, 90 and 91.

 

090-099

[Library]  Numbers 000-099 are the first 3 digits in Dewey Decimal Classification System call numbers for library books in Generalities (Bibliographies, Encyclopedias, Magazines and Computer Science…). Numbers 090-099 are for books in Manuscripts and Rare Books.

 

91-99 & 991-999 & 9991-9999 & 99991-99999

[Math.]  Repeatedly inserting number 9 before ab and number 0 before cdin the square number abcd = (9x)2yields the square numbers: (99x)2 = 9ab0cd; (999x)2 = 99ab00cd…, for x = 1 to 9.

 

01-99

The numbers commonly assigned for lower level undergraduate (the first 2 college years, freshman and sophomore) courses in most U.S. universities and colleges.