Questions tagged [mathematics]
A puzzle related to mathematical facts and objects, whose solution needs mathematical arguments. General mathematics questions are off-topic but can be asked on Mathematics Stack Exchange.
37
questions with no upvoted or accepted answers
18
votes
0answers
890 views
Can you provide a hint on how to solve this Hex Cube puzzle?
I've been tackling this puzzle named "Hex Cube" which comes with the instructions "Can you decipher the message? You should be able to if you go back to basics and use a little bit of ...
12
votes
0answers
229 views
Translating a fiendishly exceptional automorphism of $S_6$ into a lay-math puzzle
Foreward: This post not a puzzle in itself, but an invitation for you to show off your puzzle-making skill regarding a given topic. Although the tag description of "puzzle-creation" seems to ...
12
votes
0answers
1k views
9
votes
0answers
392 views
Dead By Daylight
This puzzle is a reference to a game, Dead By Daylight. Though you don't need a knowledge about the game. Consequently, there is no "video-games" tag.
Story
The Entity wants to have the ...
9
votes
0answers
400 views
I'm a number with a special product, so name me when you think you've got it
In the blocks that come before,
their special product tells us more.
To guess my scheme you'll need calculation,
but only little tests of recreation.
Each block contains atoms strong as Thor,
...
7
votes
0answers
312 views
Sequence Puzzle - First Question of 42
Professor Tera was walking on Connecticut Road, where there are some public restrooms.
Tera saw some students standing in a row. They seemed to be playing a game called Evolution.
And it looked like ...
7
votes
0answers
162 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
0answers
358 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 ...
5
votes
0answers
268 views
5
votes
0answers
190 views
The Abnormality of me
I just got born. There's nothing I can do. Maybe "nothing" is such an appropriate word for an age 0.
A year passed. There's still nothing I can do. I haven't changed. Maybe I am to retain my ...
5
votes
0answers
518 views
Locked Door Number Puzzle
I'm supposed to make a delivery to a crazed botanist. In case you're curious, the shipping manifest is:
...
5
votes
0answers
268 views
Find the missing element?
I've been trying to solve this for quite some time, can you help me solve it?
This puzzle was made by one of my friend's teachers. This is not copyrighted and cannot be found anywhere on the internet.
...
3
votes
0answers
118 views
Slow & Fast drivers
Let us define "fastness" as a characteristic of how fast/agressive a driver is. One aspect of this is the (maximum) time between a traffic light turning red and the driver deciding they have ...
3
votes
0answers
196 views
One vs many. Can white force a draw?
On an infinite chessboard there's a single white king and N black kings. The nearest black king must be K moves away from the white king. Given N, white dictates the value of (finite) K, then black ...
3
votes
1answer
188 views
Patterns - they're everywhere!
You wake up in a room (again) that has two floors, Both have 3 puzzles. In order to escape, You have to find every answer in this order: Red Yellow Green Cyan Navy Pink and combine it together (eg if ...
3
votes
0answers
286 views
Fill in a 5x5 multiplicative magic square
Let's say you fill in a 5 by 5 square with the numbers 1, 2, ..., 25. Is there a way to fill it so that the product of the first row is equal to the product of the first column, the product of the ...
3
votes
0answers
200 views
Infected Cylinder and Torus
A variant of the well known Infected Checkerboard problem. If we've a 𝑛x𝑛 square, then we fold it along top and bottom row to form a cylinder. A cell in this cylinder becomes infected if at least ...
3
votes
0answers
141 views
Ideas on spatial puzzles for a city walk
Background.
With the relaxation of covid-related restrictions, there was a need for intelligent city walks. Walk here is a moving between city objects by a certain (deterministic/stochastic) route.
I ...
3
votes
0answers
177 views
The madness of a master
It was midnight. Mr. Holmes was suffering from abdominal pain, shortness of breath, pain in the bones, skin lesions and whatnot? So in this condition, why would Mr. Holmes drive to Brazilian Churches, ...
3
votes
0answers
195 views
2
votes
0answers
117 views
Does anybody know the history of this star/triangle puzzle?
Does anybody know the history of the puzzle posted by Mario Bilotti? Who created this puzzle? Who deserves the credit?
Find 10 triangles in a five pointed star using two straight lines
2
votes
0answers
388 views
Not a sudoku, but still fun?
Context:
I was trying to solve some of the puzzles on this site, when it occurred to me to make a puzzle variant myself.
I immediately could construct one with my additional rule. Making an ...
2
votes
0answers
171 views
Even and primes puzzle?
this is secret numbers that increase regularly, what is the order?
If you like numbers, it will be fun.
$2^3 \times224299$
$2^2 \times 3^2 \times 19 \times 3557$
$2 \times 5 \times 320647$
$2 \times ...
2
votes
0answers
461 views
A robot moving on a grid. Part 2
This is an extension of the discussion
A robot is placed on a grid point. At each move the robot must take three steps along the edge of the grid. After each step the robot must turn right. Lengths of ...
2
votes
0answers
138 views
Formula for the sequence 1, 1, 1, 21, 3, 1, 4, 1, 5, 1, 6,
The sequence 1, 1, 1, 21, 3, 1, 4, 1, 5, 1, 6, ... appeared in one of my tutorial sheets in 2019. I assumed that the fourth term, 21, was a mistake (was supposed to be ..., 2, 1, ...) then it made ...
2
votes
0answers
140 views
The Game of Numbers (#02)
Related to The Game of Numbers (#01)
Agatha just decided it still isn't enough because she thinks it's way too easy. She decides to add one more rule to the list and change some of the existing rules.
...
2
votes
0answers
233 views
Code Breaking ( Sort of )
So someone sent me this code breaking/riddle to solve and I got really confused on it. I do need help on it,
The Code needs to come out into a Phrase ( group of words )
CLUE 1: 2210232013400 - ...
1
vote
0answers
192 views
The meaning of the related numbers
Question: What follows in the sequence below?
10233432943
As a hint, I must say I do not like the single 1 in it. It is unclear if the sequence even started with 1, but the 1 it needed.
I had to ...
1
vote
0answers
112 views
Searching online catalogs is a pain. Can you tell me if it's worth my trouble?
Searching online catalogs is a pain. Can you tell me if it's worth my trouble?
As an example, I searched the following online catalog of a well-known country-wide British outlet for the keyword "...
asked Jul 23 '20 at 23:12
chasly - supports Monica
7,5041 gold badge19 silver badges61 bronze badges
1
vote
0answers
121 views
How Do You Prove That This Puzzle Is Physically Solvable?
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 ...
1
vote
0answers
597 views
Decode this message to stop the destruction of Science!
An extremist religious organization called "The Redeemed Against Scientific Usurpation of God's Authority", or RASUGA, have converted the world's leading time travel researcher to their ...
1
vote
0answers
113 views
Filling a sudoku/latin square like array
Let us build a square array in the following manner, which I would like to call a modified sudoku:
1) Every row and column contains only one copy of a positive entry and there are exactly $t$ such ...
1
vote
0answers
266 views
ARG Puzzle Gate 15 Help
Me and my group (yes I'm in a group trying to solve this) are currently working on an ARG puzzle and we are stuck. The first image/clue to the entire puzzle is what is seen below. The creator of this ...
0
votes
0answers
167 views
The answer to this code is a famous celebrity
simple and fun--this is another code I made for friends
Hints (how few can you use?):
...
0
votes
0answers
87 views
Bisecting a 3D object into two equal volume objects - 2
Given the following 3D object and means of an unmarked ruler
to draw lines on its surface define a straight cut that will split it into two objects with the same volume.
Hint: It seems to have at ...
-1
votes
1answer
169 views
What is the relationship between these numbers?
Find the relationship between the following numbers, and the number which replaces the ?.
1726
(3176)
4342
2162
(7516)
7995
1725
(?)
8418
-6
votes
1answer
195 views
Find the next number in the weird sequence
The following sequence has been made using a specific pattern and the last number is kept secret. We have to find that number along with the pattern followed to make the sequence.
3, 11, 32, 71, 136, ...
