All Questions
Tagged with cipher mathematics
85 questions
9
votes
2
answers
794
views
Stopping the bank robbers
A notorious gang of bank robbers use simple one time pads each time they plan a robbery. That is they represent a blank space as the number 0, the letters a to z as the numbers 1 to 26, and ".&...
- 718
2
votes
0
answers
186
views
A code I hope takes a while to solve. 19 16 19 15 23 16 24 11 11 24
Here's the message I have created:
...
- 37
1
vote
0
answers
150
views
Code-Breaking Riddle
My friend sent me this puzzle.
I have a few 306-character strings of all seemingly random capital letters. Here are some examples:
...
- 111
2
votes
1
answer
241
views
It’s the transition that matters
Cole gave a message to Atis.
"It’s just a very long number!" Atis exclaimed, "The number over here to be specific!"
Cole whispers Atis something, but all she caught was something ...
8
votes
0
answers
501
views
Secret message from a kitten (definitely not a cosmic horror from beyond time)
Can you decrypt this secret message?
Transcript:
...
- 31
7
votes
1
answer
362
views
What string comes next?
What string comes next:
accccfjuyz
fhqsstv
cfgiorttv
cfffgiioorsttuvz
abccffgioorttvz
aabcccdffghimooqrssttvzzz
Hint:
Hint 2:
Hint 3:
- 2,011
6
votes
6
answers
6k
views
'SILVER' -> ‘LESIRU' and 'GOLDEN' -> 'LEGOND', so 'NATURE' -> what?
I found this problem in an Indian Highschool Reasoning Olympiad. (image)
If 'SILVER' is coded as 'LESIRU' and 'GOLDEN' is coded as 'LEGOND', then in the same code language how 'NATURE' will be coded ...
- 243
1
vote
1
answer
296
views
In a certain code 'NATIONAL' is written as 'JUBOKZMN'. How is 'ELECTION' written in that code?
In a certain code 'NATIONAL' is written as 'JUBOKZMN'. How is 'ELECTION' written in that code?
(A) FMFDSHNM
(B) DFMFMNHS
(C) DMFMFHNS
(D) MFDFHSMN
I really tried many basic methods using positional ...
- 243
0
votes
1
answer
187
views
this puzzle is based
This message is a basic numeric substitution cipher. The key is the standard, regular alphabet in the correct order (ABC...XYZ).
Here is the message:
3 16 15 7 20 1 22 23 13 1 22 10 16 15 21 27 16 23 ...
- 610
2
votes
1
answer
262
views
#TenderfootSpiral
Clues:
Two hikers on an incline arrow with numbers.
Hiker 1 says: 38.548493. Hiker 2 says: -105.998749.
Sequence: Hiker 17711 Hiker 0 377 0 144 1 10946 233 987 0 2584 6765 75025
Hiker = ...
- 769
-6
votes
1
answer
261
views
Decipher a long sequence of numbers
51699624576811268526783109824167925197245652924177251787241782538786302873119768312852668312686625268245686752824473216878253830287925175273039778250852831287672527245665263006725397251762529312811498
...
- 1,445
4
votes
1
answer
546
views
Help a woman from ancient Rome find out how her husband is doing
Let's go back 2000 years. A woman named Valeria received a strange message from her husband Claudius who is a frumentarius.
The message:
...
- 1,445
8
votes
1
answer
609
views
Digit and (Digit) are different!
A, B, C and D are four different single digit numbers.
It is given that:
A + B = D
A - B = C
It is also given that:
A × B = (B)
C × CD = (D)
Questions:
Decode why B and D are enclosed in brackets.
...
- 5,785
-1
votes
1
answer
233
views
Poem coding scientific constants
The following Vogon poem contains various mathematical, scientific and cosmological numbers. There are ten. Can you find them? Credit for partial solutions.
A BTAUJV BTA ALEJM AV EUMJM FAV EATR O
- 914
5
votes
1
answer
527
views
Togetherness - Enigmatic Puzzle
Clues:
43516 27692 9890 49450 25714 1___ 45494 29670 9890 35604
1___
Instructions: Fill-in the Blank
_ _ _ _ a _ _ _ _
- 769
1
vote
1
answer
193
views
Letters and dashes... but without the numbers this time!
Previous Part
Here's another fun puzzle!
Decode this statement:
...
user80078
3
votes
1
answer
548
views
A Rotten Riddle
Someone gave me a scrap of paper and told me if I could solve this, I would get a prize. The only thing on the paper was the following: ...
- 315
1
vote
1
answer
90
views
Numbers and Dashes again... but with letters this time!
Previous Part
Here's a fun puzzle I created!
Decode this statement:
...
user80078
2
votes
1
answer
236
views
2
votes
1
answer
190
views
Entry to CIA Part #2
Previous Part: Part #1
After successfully completing Part #1's puzzle, you receive another message from the CIA on your black screen:
Dear Reader, we are glad to state that you have been accepted ...
user80078
4
votes
1
answer
632
views
Entry to CIA Part #1
As I searched for different topics on Google, my whole screen suddenly went black and gave me this letter:
Dear Reader,
if you have come across this message, you may be applicable for the CIA.
We are ...
user80078
4
votes
1
answer
301
views
SETI message received
At 03:39:18 UTC, the Allen Telescope Array detected a series of distinct signals from the direction of the Procyon star system. There is speculation that these signals considered together could carry ...
- 14k
0
votes
1
answer
414
views
Ivevihvw Zokszyvg Kfaaov
Vevib ovggvi szh yvvm ivkozxvw drgs gsv xliivhklmwrmt ovggvi rm gsv ivevihvw zokszyvg.
Rh gsv mfnyvi lu ovggvih rm gsv zylev hvmgvmxv kirnv li xlnklhrgv?
- 209
6
votes
1
answer
253
views
A very basic cipher
The following is a relatively basic cipher I have constructed. I still hope it's entertaining.
_ _ _ _ _ _ _
A _ A A A
A A _
A A
A D
B
B _
A A
B H
The answer is ...
- 2,436
-1
votes
2
answers
182
views
Odds of there being two solutions to a word puzzle [closed]
What are the odds of there being two solutions to, say, a cryptoquote? And is anyone aware of an example of such?
- 329
0
votes
1
answer
219
views
What is the next diagram, and what is the number?
I needed some help to a friend of mine, he was solving a puzzle. He sent me a remake of what he was solving, and its up to you to help my friend!
Note:
My friend says that he messed up at 32, there ...
- 1,378
9
votes
1
answer
368
views
It's your turn now!
What is the simple rule behind these three relations below?
$F$ $\rightarrow$ $C$ :: $R$ $\rightarrow$ $I$ $\rightarrow$ $\sqrt{F}$ ::
$IA$ $\rightarrow$ $D$
- 43.7k
5
votes
1
answer
349
views
Kaboom-y numbers!
Here is a new type of puzzle poem I made. Enjoy!
Note: The title is named like that for a reason.
I have a number in mind, it is super cool,
But there's something you need to know, or you will find ...
user71418
32
votes
2
answers
2k
views
CSE Hex Cube Puzzle
I've been tackling this puzzle named "Hex Cube" from the CSE (Communications Security Establishment, the Canadian "equivalent" of the NSA) which comes with the instructions: "...
- 93
7
votes
1
answer
163
views
Number to Alphanumeric Mapping
A certain website uses the following mapping to encode their integer ID to an alphanumeric string. Can you figure out what the mapping is?
...
12
votes
1
answer
664
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 ...
- 5,541
17
votes
1
answer
1k
views
What is the Color Code™?
Inspired from Can you name the country code? and What is a Number™? series
$
\begin{gather}
% custom template - reuse if you may
\def\S#1#2{\Space{#1}{21px}{#2px}}\def\P#1{\V{#1em}}\def\V#1{\S{#1}{9}}...
- 6,518
6
votes
1
answer
367
views
Can you cut through the mist?
I've created a mapping between words and complex-valued polynomials, and I've generated examples from word lists that I've I found on another puzzle. You don't need to study every one of these, but I ...
- 2,296
3
votes
1
answer
273
views
Decode the number to get a color!
These numbers in some way represents 4 commonly used colors: 25536, 187669382, 3043469, 11599
Can you decode it?
Include the answer and your thought process to get the check mark.
Let me know if you ...
- 1,275
18
votes
1
answer
690
views
A remarkable musical ode
On his deathbed, the great blind composer Charles Triangle composed the following remarkable piece, but his penchant for puzzles has left critics in tears searching for a deeper meaning to a piece ...
- 5,470
2
votes
1
answer
180
views
Exceptional numbers, neither good nor bad
Behold, my new comrades, a monstrous yet straightforward puzzle, appearing on the order of that group of fellows occasionally visiting PSE but hitherto unable to join their simple friends. I assure ...
- 5,470
4
votes
3
answers
522
views
Something I loved the most
Below are some puzzles you need to solve to make a 4 letter word.
1.
105 35
315 ?
2.
I am the most important element in your surrounding.
I was found by a Scottish physician.
Who am I?
3.
I am ...
- 649
7
votes
1
answer
192
views
Cipher puzzle - Cryptography of the day
I received this in my email:
Kpa nfwa jnjnbb vo Sk kizk auy phurtpijd?
Solve it.
- 2,709
7
votes
1
answer
413
views
14
votes
2
answers
679
views
Shots, shots, shots, shots!
Once in a while I go out for a drink to my favourite bar. Normally is just drink a beer, eat some snacks and have a good time with my three friends. But last night I wanted to do some shots. The ...
- 764
6
votes
1
answer
185
views
Find the location of the royal artifacts
London, 13:20
While media and experts are still baffled on how Inspector Arbor caught Norman Erdmann (can you solve it? See here) Arbor himself has no time to rest.
Police has already questioned ...
- 790
1
vote
0
answers
611
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 ...
- 2,768
9
votes
3
answers
333
views
Know your primes
Did you know that a prime, regardless of its base, is always a prime?
I am looking for a prime. It’s the largest of its kind.
In solving this puzzle, the answer you may find.
...
- 2,351
2
votes
1
answer
2k
views
color coded puzzle
Help me solve this problem. As this site appreciates a little effort from the person who posted it. Here's my thought process:
1) The matrix starts with 0 ( gr, gr, gr). It has three places which can ...
1
vote
2
answers
188
views
Unravel this simple cryptic Unique NUMBER relationship
Find GC ...it is a concatenated number
Given:
N + U + M + B + E + R = GC
- 5,929
6
votes
2
answers
288
views
Just a Simple Number Crossword
I made a small number crossword for my mathletes club that I thought I'd share. It's not too hard, I think it's just right for a coffee break. Have fun!
(Edit: No answer has a leading zero)
- 9,977
9
votes
5
answers
275
views
What's for dessert?
Another puzzle, yay! What do I want for dessert?
An element, a blue liquid you breathe.
The end of a sentence.
wgpz tzggjr wgvxf bmzzi mzy
It's three til' 4, plus forty more.
Hint:
- 1,951
4
votes
1
answer
373
views
This picture has some hidden message. What is it?
This picture was uploaded for the Olympiads of Medicine, from Porto. While the answer might be in portuguese, I don't find it likely.
I tried some Caesar Cyphers, I assumed the colours represented ...
- 225
7
votes
3
answers
589
views
My Grandpa's Box #1
My grandpa died last month. At the reading of his will, he left me a strange wooden box. A post-it-note on the side read "You were always good at puzzles." There was a number lock on the front that ...
- 4,877
4
votes
3
answers
403
views
Who is John's favourite painter?
John being his usual self forgot the name of his favourite painter. He went to the Oracle for assistance but inadvertently walked in on her while she was busy eating pie. Angry at the interruption, ...
user49256