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Unanswered Questions

88 questions with no upvoted or accepted answers
22 votes
0 answers
3k views

What does this mathematical operator do?

The solution to this puzzle is one I came up with when working on this puzzle: What is the answer of this math puzzle? For two natural numbers a,b, can you figure ...
22 votes
0 answers
2k views

REALLY important days in history

@Z. Dailey asks a mathematical puzzle Important days in history... and to come! with a series of dates in years 1973, 1978, 1983, 1992, 2005. My puzzle asks the question: What is the previous date in ...
11 votes
0 answers
406 views

What is a Freecell Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Freecell Word™. Use the ...
9 votes
0 answers
476 views

The highest poem

I am three, often a person, always a digit, and also witout. George POUST was his name. Manufactured by Ford between 1972 and 1976. YMCA was not my first team in my coaching career. Theory of ...
9 votes
0 answers
370 views

My drunken formula?

I know that today is an important day, but I can't remember why... All I have in my possession is this formula I wrote last night in my drunken stupor: You go here: $$B = 25 + \biggl(\frac{O}{...
8 votes
0 answers
495 views

xkcd 2957 - A Crossword Puzzle

The latest xkcd is a crossword puzzle. I thought it might be of interest to this community. Solve it on Penpa+ Clues: Across 1 Famous Pvt. Wilhelm quote (10) 11 IPv6 address record (4) 15 “...
8 votes
0 answers
229 views

There are 49 cards here. Figure out what the seven facedown cards are and what position they're in

So here's the problem "There are 49 cards here. Can you figure out what the seven facedown cards are and what position they're in?" I have tried about everything in my math tool belt to try ...
8 votes
0 answers
559 views

Ode to a Nightingale: a puzzling study in literary criticism

The field of literary criticism is an interesting and fruitful one, in which puzzlers might carve out a niche. This was recently brought home by a conversation I had with a sagacious old gentleman in ...
8 votes
0 answers
346 views

We found text from the year 2040!

Recently, the first surviving examples of text from the ███████████████e discovered! The unearthed artifacts included a collection of rectangular tablets inscribed in the hitherto unknow███████████████...
8 votes
0 answers
201 views

Is it possible to create a knot that is locked only when the rope is stretched?

Is it possible to create a knot that is stable/locked when the rope is stretched? When the tension is relived the knot should open.
7 votes
0 answers
899 views

They are all K-verbs

Find the missing verb. G: Fold, Break, Pry D: Reduce, Vibrate, Rob B: Soak, Subtract, Thrash J: Sleep, Squeeze, ? Subtle Hint: Moderate Hint: Decisive Hint: Very Decisive Hint:
7 votes
0 answers
368 views

Do you see the point?

Original puzzle by me. Remember to always obey your superiors. The first one should be 08594. Hint:
7 votes
0 answers
346 views

Stress Not! - A North Daniels' Puzzle

Beep, beep, beep, beep... No, this was not the sound of D.S.I North Daniels playing miniature cricket on his phone, although that would be a preferable situation to the one he is in now. Unfortunately,...
7 votes
0 answers
397 views

Open the French safe

While walking in a small alley in Paris, you come across a safe. The number pad looks like this : There are things on the back of the safe too : "À l'aide du carré 3x3 ci-dessous et des nombres ...
6 votes
0 answers
306 views

What song are these lyrics from (translated into emojis) ~ 2

😁👈🤠🐎🎰 👈🎰🗺️🏘️🏘️ / 👈🎰💯⭕ 🕰️👉🫱🫲🃏🃏🃏🃏🃏 👉🧠🤠👈🛏️💰👈👇 🛏️💰👈👇 (2x) I am happy to share this wonderful song with you. You will love driving or doing any travel with this song. The ...

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