How about, "the set of things mentioned in the classic puzzle 'if there are three lightbulbs in one room, and three light switches in another room that control the three lightbulbs...'"
Failing that wild guess, how about are any of these in the set:
Originally posted by ddebened How about, "the set of things mentioned in the classic puzzle 'if there are three lightbulbs in one room, and three light switches in another room that control the three lightbulbs...'"
Failing that wild guess, how about are any of these in the set: