real's questions - English 1answer

63 real questions.

I told my teacher that I liked riddles and puzzles. As a matter of fact, I introduced him to the Puzzling Stack Exchange! Then, he got a sheet of paper, asked for a pen, and when he found one (I didn'...

The number of keys on your key ring has been growing steadily over time, and now you already have 15 keys to keep track of! Unfortunately, you are unable to distinguish one key from another (apart ...

The D'Agapeyeff cipher is an as-yet unbroken cipher that appears in the first edition of "Codes and Ciphers", an elementary book on cryptography published by the cryptographer Alexander D'Agapeyeff in ...

The board game is about to begin. And suddenly we realize that we need to decide the starting player. The dice procedure is tiresome. And we can't find our dice right now. Or any other artifact that ...

It's time for lunch, and I want to eat my favorite Regresso™ Chicken Noodle Soup. Ideally, I would pour all the soup from the can to my bowl, microwave the bowl, then eat the soup. Unfortunately, ...

This is a relatively straightforward little puzzle, but the answers are somewhat unintuitive or can prompt a new perspective. It might be an interesting little puzzle for a probability teaching ...

This is a real life question. I have a hat that has this symbol on it I can't figure out what it means. I have asked everyone I know. But I didn't get good answers. So What does it mean? Even if ...

I recently watched this video about the mythical arcade game Polybius. It's a well-crafted investigation that thoroughly debunks the myth, but there's a segment in which the investigator suspects a ...

This is a real-life puzzle encountered by one of my friends. I want to arrive early to my class today. Exactly every $7$ minutes, there is a bus that arrives at the station near my dorm and will ...

Two months ago, my friend bought a new Chromebook. He told me yesterday that while he is happy with the computer overall, he's not that impressed by the quality of the keyboard. My friend is an ...

Who can solve this cipher?

1 answers, 743 views cipher real
The following cipher is moderately difficult but not impossible. It is (IMO) probably easily solvable for an experienced professional code breaker. ...

Separate the milk!

15 answers, 9.674 views real physics
You have a jug of milk and a jug of water. You must empty both jugs into a nine gallon barrel. You must be able to: Differentiate between the milk and the water Separate the milk from the water You ...

This is a code from an old home computer magazine. Still it is unknown the cipher used for it, although they gave the solution: ...

Changing baby's shirt

6 answers, 5.083 views real topology
Baby needs a change of shirt, but baby is also sucking on a bottle (see this stock photo for a visual). If the bottle leaves baby's mouth, baby will start crying. Also, baby loves holding the ...

Helicopter fly from New Jersey to the north for 500 km and then to the east 500 km, then to the south 500 km and then to the west 500 km where is she now? Can it arrive at a position where ...

I came across this problem in real life and thought it could be made into an interesting puzzle. I will enjoy seeing how my eventual solution could be improved! Here's the situation. There ...

Yesterday, after I picked up my son from fencing practice, we stopped at Krispy Kreme to get doughnuts, as per our tradition. The total was $3.19. I paid with a five dollar bill and when I got my ...

Here's an interesting scientific problem. Drop a small ice cube into a partially filled glass of water. Next, get a foot-long piece of thread or string. The puzzle is to remove the ice cube from ...

A word is said to be autological if it describes itself. This can be a property of both nouns and adjectives; for example, "noun" is a noun and "pentasyllabic" is pentasyllabic. We can also construct ...

Tonight, my friends and I went to the mall. We planned to buy some shirts and pants, but suddenly... we found this! These are number/size pins. They are typically used in hanger to denote the size of ...

Warning: It is actually a simple "puzzle" which is silly but debatably unique as it really happens to me in real life. I'm amazed with nowadays technology. When I go to one of the shopping mall in ...

I am trying to figure out a cipher I think I found in a book from 1982 and it's a 35 year old mystery we are trying to solve (I will reveal the book if this turns out to be something so everyone can ...

You are on vacation in New York City. You didn't bring your car, and it's currently around $-50^\circ C$, so it's probably a good idea to take the NYC metro subway to move around. You need a metro ...

In the United States of America, the New York City Borough of Queens lies at the west end of Long Island. More than 5000km across the Atlantic ocean lies the Metropolitan Borough of Bolton, a borough ...

I use to to help with the nursery at a very small church. The Nursery was downstairs next to the the two small restrooms for males/females. Whenever I had to go out to a restroom to get towels or ...

3D View of one solutions http://autode.sk/2Dg4FWx I designed a 4x4x4 soma cube in AutoCad and then built it with wood cubes. There are twelve pentacubes and one tetracubes. Each piece is unique and ...

The background to this one's given here: http://www.damninteresting.com/89-263-201-500-337-480/ NB: These may not be a genuine cryptograms (current thinking is that these are gibberish); but I though ...

Froggy's Problem was presented in Lewis Carroll's Symbolic Logic, with a note that it "contains a marvellous trap". Because Carroll never released Part 2 of Symbolic Logic, its solution is unknown. ...

Length of mystery object

2 answers, 361 views real
What everyday object is ${n}^{-1/4}$ metres long, where $n$ is an integer? Hint: n= Note there may be some cultural dependence here.

I have a boy, he has a toy which need 3 batteries, but I only have 2 batteries. With an easy hack I can switch on the toy to work properly. What did I do?

This happened to me in a rental apartment and I had to be creative to solve it. The geniuses who designed the bathroom managed to fit a drawer about a centimeter behind the door, and eventually what ...

Floored and foiled

1 answers, 288 views geometry real
Scene 1 – A hallway There I was, in a corporate hallway 110 shaftments long (approximately 18 m or 60 ft) and unspooling a 100 -shaftment length of cable from a reel. All too ...

Diophantus was a famous ancient Greek mathematician. This was carved on his tomb: Herein lies the remains of Diophantus. God vouchsafed that he should be a boy for the sixth part of his life; when ...

You may have played/sung/heard a song without words in concert, in choir, and in a Sushi restaurant. Who hasn’t?! Well here is a picture without words, only axes: And here it is without JPG-...

Who is Panama Oxridge?

2 answers, 2.118 views real treasure-hunt
Panama Oxridge is the author of a children's book series about a boy called Justin Thyme. However, the name Panama Oxridge is actually a pseudonym for an unknown author. From the series website: ...

Humans are not always accurate at measurements. I recently got a table top that came with an attachment. Table top and attachment are nearly of same size and rectangular with four screw holes near ...

I found this inscription on a wall of a house in town of Martorell, Catalonia, Spain. It looks rather modern and I think its creator ciphered some word / message / joke in it. I tried to lookup ASCII ...

On June 30 1999, Ricky McCormick was found dead in an isolated area, 15 miles away from his home. He didn't own a car, and the area was not subjected to public transport so it is a mystery how he got ...

(click to visit this picture via Google Street View) The weather was less pleasant than pictured above but the afternoon began nicely enough that I wasn’t about to waste an hour already ...

A cookie-baking recipe book (this one, specifically) has the following instruction in it, which is incorrect in a single spot: If you have a fan-assisted oven, you will need to reduce the recipe ...

I came across this picture and thought that this would be a fun programming puzzle to work out. (https://www.reddit.com/r/funny/comments/4hjf4y/ill_take_february_tickets_please) (Clearly, the ...

The master programmer sat at his desk, gazing into the distance, his eyes seeing, and yet unseeing. The lunch had been heavy. His reverie was interrupted by the appearance of his close colleague, ...

3D wooden puzzle

1 answers, 18.886 views mechanical-puzzles real
I got a 3D wooden puzzle in which you are supposed to rebuild. I took pictures of the 6 pieces (click images to enlarge): I found this image on the Internet. I believe it's the solved version: How ...

            Make a non - 24 - hour day /  night cycle       &...

Three motorized 24-hour light timers are arranged between a power outlet and a light bulb, with timer A parallel to a daisy chain of timers B and  C. For these timers, devise schedules that ...

This is the second in a series of Unsolved Mysteries posts. These posts explore current unsolved real-world puzzles. Since these have been unsolved for years, it's uncertain whether anyone on on ...

When I was young I got this puzzle as a gift to me. The aim is to get the long piece out. I haven't yet found a solution, and I'm not sure if there is one Does this have a solution and if so ...

On a recent amble, I happened upon a sign $\small \raise2mu ( {\normalsize\sf\color{#d90} A} \raise2mu )$ that seemed to indicate a mistake — or— a mystery. ...

This is a quick little puzzle that requires a bit of lateral thinking. Today, my boss physically walked out of her office (her private room in the larger office), but she never physically entered her ...

Wish I’d had a camera at the time but a cartoon will have to suffice, representing two actual incomplete rainbows that stop in midair where they meet, lit only by a setting sun. This seemed so ...

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