You know how textbooks often have a knowledge check at the end of a chapter, distilling the chapter’s lesson down into just a few core questions? This week’s puzzle is like that. It requires using the crux of at least one of the earlier puzzles (1-4) to get to the answer. Ready?
Good luck!
Also note that the Puzzle Point shop is still forthcoming. I’m also working on an on-page submission form for these riddles so that respondents can keep the answer private until the week is completed. For now, please continue to post responses in the comments.
Once again, good luck! Remember, if the answer isn’t coming right away, you may find inspiration in earlier puzzles!
f(100) is 1. The function takes the character length of the number when it’s written in Roman numerals. The Roman numeral for 100 is C which is only 1 character in length.
The answer is 1. It’s the number of characters in the Roman numeral equivalent of the number; thus f(100) = C, which is one character long.
clever.