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.

, 68 is the very last two-digit number to appear for the first time. In restaurant slang, "68" is the opposite of

On an infinite chessboard, there are 68 distinct squares that are exactly three knight's moves away from any starting square. In restaurant slang

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 In restaurant slang, "68" is the opposite of