Recently there was a jug pouring competition, and I got to thinking if this was the question with the most number of moves. It turned out that it was. If you have three different sized jugs all less than or equal to 10 litres, and only one of those jugs full, what target volume would give you the...

The top four flights of the English football league system consists of the Premier League and three lower divisions. Chelsea is reading a newspaper from July of a year from 1993 to 2019. Chelsea: "I will give you the position of a team in each league and you tell me the season." Derby: "Doe...

![2 6 5 7 - Has two correct digits but neither are in the correct place 0 4 1 5 - Has one correct digit but it's in the wrong place 4 2 6 8 - Has no correct digits 1 7 4 9 - Has two correct digits,both in the correct place ]1

Ok, let's assume that a hole is drilled from one point on the globe through the center of the Earth to the Antipodes, as I attempted to illustrate, and a steel ball is dropped into the hole at point A. Ignoring any external influences such as air resistance, friction and conditions of the E...

During this unfortunate Corona situation in Stackville the WalMart is closed every Monday, BestBUY is closed every Tuesday, the Liquor Store is closed every Thursday, and the bank is open only on Monday, Wednesday, and Friday. Everything of course is closed on Sunday. One afternoon Mrs. Fe...

This is somehow follow up question to How to measure 5 litres using 10L, 7L and 3L vessels You went to a farm to get some milk. You only need $11$ liters of milk and ask for it to the farmer, but our farmer has only left a filled $13$ liters of milk with two other empty $5$ and $9$ liters of ves...

I was solving this online quiz (http://www.programaths.com/iqchallenge/index.php) when I encountered this question and simply could not solve it. Let's call the four options below the matrix A,B,C and D starting from left.

https://www.reddit.com/r/BeAmazed/comments/fyt7x9/it_seems_to_be_impossible_but_it_gets_done/?ref=share&ref_source=link The goal of the puzzle is to remove the wooden stick from the jar by fiddling with it. Is it possible to mathematically/physically prove that the puzzle is solvable, given the...

Someone recently sent me this cipher: (https://pastebin.com/uEg9dTpi), at first it's something that seems like decimal code and then there's an encrypted code that has a lot of letter repetitions, like an ADFGVX cipher, I don't know how to progress further. Do you guys have any idea what this is?

I took part in a meeting of puzzle maniacs. I overheard a conversation between two persons. A: Hey, solve this alphametic problem. LHS is a square of two-digit number and RHS is a four-digit number. B: Does it contain some middle steps? A: No. That's a whole. Can you solve it? After some minu...

In an old book (*) I found an advert with a puzzle I had never seen before. Unfortunately the book is very rare and it is hard to make out in the scanned photocopy above. I have redrawn it: It looks a bit like the classic Tangram puzzle, but it consists of three identical trapezoid/trapeziu...

What I decorated has been printed all around; if read in the wrong way, I burn every object down. Some of you may see me right now, depending on your device; and I'm created and placed by keen, observant eyes. What am I?

Anyone knows the answer?? I met this quiz at vrchat.

This is called Hidato or Snake Puzzle ! The goal of Hidato is to fill the grid with consecutive numbers that connect horizontally, vertically, or diagonally. For your help, the grid is already filled with a few numbers.

Every Saturday at Netopia's Square, a peninsula at the tip of southwest Netopia, there is a leaderboard kept of Netopia's Square's six local resident wizards. (in no particular order) They are ranked based on the their acts of magic for the previous six days. The highest ranking is 1 and...

0, 4, 10, 32, ???, 317. Note that ??? represents a 3 digit number. All numbers are base 10 so don't bother trying to use other bases. Also, don't use any difference between successive terms because the answer I am looking for doesn't use those. There is a very specific pattern I am looking fo...

Which famous mathematical constant can be celebrated on these dates? April 11, 2020 April 12, 2021 April 12, 2022 April 12, 2023 April 11, 2024 April 12, 2025 April 12, 2026 April 12, 2027 April 11, 2028 ...

Puzzle: The symbols on the right is the solving order. The / symbols are tally marks.

You are given 10 sets of papers with 10 questions each. Answer to each question is from 1 to 4. You somehow get your hands on the answer sheets and able to memorize each answer (Answer sheets only contain set number and 10 answers from 1 to 4). Although on the exam day, you don't know which set y...

Our story takes place in the future. Earth has been invaded by an evil alien species, known by the humans as simply, "The Bots". They are essentially robots, but sophisticated and evil. Humans have also evolved, being bigger, stronger, and faster. The Bot Viri's radar picked up the human Mr. ...

A coding competition in Netopia pitted each PHP Programmer contestant against every VB Programmer and C++ Programmer contestant, each VB Programmer contestant against every PHP and C++ contestant, and each C++ contestant against every PHP and VB contestant in three contests of programming skil...

Prison open, with a shift of four (4) I believe the answer is STIR. Stir is a prison, but how does this fit the rest of the clue?