I hope that you enjoyed Saturday’s Mac Riddles, episode 118. Here are my solutions to them.
1: 42, 3.14159, 0x2A, but not x.
Click for a solution
Numbers
42 (an integer number), 3.14159 (a floating-point number), 0x2A (a hexadecimal number), but not x (a symbol).
2: A pre-arranged meeting place, later becoming a good day without configuration.
Click for a solution
Rendezvous
A pre-arranged meeting place (a rendezvous), later becoming a good day (in 2005, it was renamed to Bonjour because of a trade mark dispute) without configuration (it’s a form of zero-configuration networking).
3: A fireplace to make the image sharp, and soon remove distractions.
Click for a solution
Focus
A fireplace (derived from the Latin word for a fireplace or domestic hearth) to make the image sharp (by focussing it), and soon remove distractions (in Monterey, what this new feature does).
I look forward to your putting alternative cases.