1968 is famously remembered as a landmark year of global social and political turbulence, often referred to simply as "68".
In restaurant slang, "68" is the opposite of "86" (which means to remove an item from the menu). A "68" means an item is back on the menu or available. 1968 is famously remembered as a landmark year
68 is a "happy number," meaning that if you take the sum of the squares of its digits and continue the process, you eventually reach 1. The Last Two-Digit "First" Number: In the digits of 68 is a "happy number," meaning that if
), a regular 68-sided polygon is considered constructible using only a compass and straightedge. 68 in Culture and Daily Life , 68 is the very last two-digit number
On an infinite chessboard, there are 68 distinct squares that are exactly three knight's moves away from any starting square.
, 68 is the very last two-digit number to appear for the first time.
While 69 often gets the attention, mathematicians and number theorists find 68 far more compelling for several reasons.