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.
25
questions with no upvoted or accepted answers
31
votes
0answers
895 views
Ridiculous problem from an old maths textbook
There's a puzzling little problem I found in one of my old maths textbooks (Basics of Madthematics). In the middle of a whole bunch of normal problems on calculus and algebra and whatever, suddenly ...
12
votes
0answers
271 views
A fairy tale in a golden toy
Once upon a time, long long ago, in the days when good stories were far more beautiful and far harder to come by, a king was asked by his spoilt but beloved princess daughter to give her a fairy tale. ...
12
votes
0answers
1k views
9
votes
0answers
243 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
1answer
678 views
Weird and complex puzzle that we need help with
So basically this is a complex deep web puzzle and we're pretty much stuck at it right now as we don't have any idea what this is about, any help will be aprreciated (the attached images are the ...
8
votes
0answers
193 views
How many rolls on average to get N dice to all show the same value?
So for example:
if $N = 3$
I roll and get -> $1,2,3$
I re-roll the $2$ and $3$ -> $1,4,4$
I re-roll the $1$ -> $2,4,4$
I re-roll the $2$ -> $4,4,4$
In this case, it ...
8
votes
0answers
297 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,
...
8
votes
0answers
194 views
The Flippin' Magician's 7-card Grand Finale
This question is a followup to this question by @ais523, which itself was a followup to this question by @Wen1now.
After touring the globe to accolades when performing his 10-card trick and 8-card ...
7
votes
0answers
329 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
0answers
142 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.
5
votes
0answers
75 views
My identity in high school
My first semester—no, my entire freshman year—in high school, I was all alone.
As I started my sophomore year, I finally made a friend. Two, actually. They weren't in the same class as me, but for the ...
5
votes
0answers
497 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:
...
4
votes
0answers
247 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
102 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 ...
3
votes
0answers
178 views
3
votes
0answers
238 views
3 x 3 Grid Square Problem
For a question that I need to answer, we have to show that there is only one arrangement for which, in a 3 x 3 grid in which the numbers from 1 to 9 are placed and 5 is the centre number, the sum of ...
3
votes
0answers
215 views
Magical Evening
Tonight will be a magical evening full of fun and excitement if you can figure out this riddle.
When the clock strikes nine but loose three dash you will find a feast at the seven of these. Where ...
2
votes
0answers
105 views
Probabilities for “What number is that? — asks grandpa”
Inspired from Multilanguage generalization of "What number is that? Asks Grandpa" and What number is that ? Asks Grandpa
In this puzzle we will use the English alphabet of 26 letters. We ...
2
votes
0answers
133 views
Minimum number of clues required for a 16 x 16 Sudoku
It is well-known that the minimum number of clues that completely specify a 9 x 9 Sudoku is 17. What is the minimum number of clues required for a 16 x 16 Sudoku whose cells contain one of the ...
2
votes
0answers
226 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
112 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
587 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
110 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
242 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 ...
-6
votes
1answer
159 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, ...
