# Questions tagged [lateral-thinking]

A puzzle solved through an indirect and creative approach, using reasoning that is not immediately obvious and involving ideas that may not be obtainable only using logic.

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### Very easy trigonometry question

There is a very well-known family of right triangles in Mathematics called "The Imperial triangles". Let me explain you how they are defined: We say $T_n$ is the $n$-th Imperial triangle if these two ...
213 views

### So, what's to do?

It's White to move and draw the game. What must White do? You must provide proof for your claim of what's to be done by any reasonable means. This puzzle was created by Nikita M. Plaksin, and ...
262 views

### TechSupport Issue ID#812

User ID: 3Aq47h-20dpc8l Language: English (UK) Today I noticed a strange text file on my Windows 10 PC's Desktop called "README.txt". Curious, I opened it and it read START → 2↑ → P 3→ ↑ P 4→ P →...
195 views

### Knights and Knaves on a (Not So) Deserted Island

One day, while flying your single-engine seaplane out over the Pacific, the electrical system shorts out, all of your electrical systems (including the radio) fail, and the engine dies. You are in a ...
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### Grandpa's Crazy Math II: Another Grandpa Mystery

Grandpa says: "This is really a stretch but Prove to me S = 0.5 or 1/2 Grandpa and his very lateral thinking!
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### A Non Math Puzzle. What is the middle number?

There are three patterns below. Two diagonal and one vertical. The middle number is common to them all What is it? It is not mathematical per se. NO partial ...
340 views

### They are all tied together

There are four different things shown below One Vertical One Horizontal Two diagonal All have one common thing (the ? box) which ties them together What is it?
1k views

### Twisted Vivaldi

There are 5 riddles. Each riddle will lead to a one word clue for the final answer. Your job is to guess the final answer. The problem is, each riddle has a twist: 1 of them is a red herring. 1 of ...
1k views

### What is the corner house number?

The Singh family lives in a housing development full of Scientists and engineers (god forbid!). The Home Owners have come up with weird ways of numbering their houses. K Street is all engineers ...
4k views

### No Shirt, No Shoes, Service [closed]

I was walking outside on a hot summer day, when I suddenly got hungry and walked to a restaurant to eat. I tried to go in, but I was rebuffed at the door. The server pointed to a sign outside that ...
351 views

### A story puzzle for you

My brother loves numbers. He likes to pick a number, reflect, and enjoy its presence. He picked a number and asked me to guess it. I guessed random numbers for twenty minutes. I never got it ...
202 views

### the camel and the eye of the needle [closed]

A farmer told me, without lying: "you see this camel over there" showing me a camel eating, "it passed whole through the eye of a normal needle" How is it possible, knowing that I too do not lie ...
492 views

### Downfall - The Riddle

If forgotten, I will be back in September. If you think I am feminine, I will show you stop sign. If you are afraid of heights, I will throw you in the sea at twilights. If any mis event ...
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Clark who is consecutive in nature, lives in California near the 100th street. Today he decided to take his palindromic boat and visit France. He booked a room which has a number of thrice a prime. ...
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### The Morality of Rice [closed]

This is a classic riddle of mine. Please read the scenario below for the setup. You are sitting around a campfire and a friend smiles and says: Sam: I have a riddle. Intrigued, you ask him what ...
370 views

Persons: ...
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### Two untrusted traders [closed]

I'm sure this has been asked before, but I tried searching and couldn't find it. I don't know the solution, and it is possible there isn't one. There is unsavoury pirate and an unscrupulous merchant....
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### Four ships at the ocean with the same distance

Four ships are located at the ocean, such that the distance between all four ships is the same. How are the ships positioned?
371 views

### Mirror Mirror on the wall, who's the richest of them all? (I make billions #7)

Mirror Mirror on the wall, who's the richest of them all? (I make billions #7) Clue group 1: This spa provides a great relaxation rub. Earbuds are included too. I compared virtual machines, and ...
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### Help with this riddle please

What can you take but not give? What takes hours to do but it’s over in an instant? You can get it but never save it. What gives you sight without seeing? Run without legs. Travel the world ...
697 views

### I make billions (#5)

I make bullions balloons billions (#5) Main clues: These statues are wonderful! I'm going to invest in the sculptor. Move faster! I need to finish the 18th hole and return this golf ...
149 views

### Who doesn’t belong in the group? [closed]

Identify the ones that are oddballs B C Ba W H Fe Si Br Rn I N O P
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### Holy Alphabet Arithmetic

$Given$: $A$+$B$+$C$=3 $B$+$C$+$D$=3 $C$+$D$+$E$=1 $D$+$E$+$F$=1 What is $E$+$F$+$G$=?
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### What causes these signs to follow this relation?

Can you find why does the below relation hold true? Hint 1 Hint 2
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### Strange? Primes and Palindromes have no business being in this Place?

$1$ $1$,$2$ Good easy start $1$,$2$,$4$ As expected $1$,$2$,$4$,$8$ I know it is going to be easy $1$,$2$,$4$,$8$,$16$ why is he giving this? I got it! $1$,$2$,$4$,$8$,$16$,Prime ...oops!.....
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### I make billions (#4)

I make billions (#4) For years did a sharp little verse, Grow fast in our ears like a curse, A tune on TV, Did subconsciously, Cause all to spend much from their purse, Who / what am ...
338 views

### What's up with my calculator?

As I am wont to do, I got a new calculator the other day. Obviously it needed a few test calculations: 5 + 6 = 11 22 - 17 = 5 10 + 3 = 13 4 * 6 = 24 OK, so ...
765 views

### The Starks, Parks, Clarks and their kids

Inspired by Martin Gardner's puzzle from his book John,a new student at the Math Department of the College, was invited to a get-together at one of the Professor's house. Professor Stark welcomed ...
113 views

### Deduce the Missing Terms in the Sequence

$NINE$ + $5$ $EIGHT$ + $3$ $SEVEN$ + $2$ $???$ + $?$ $FIVE$ + $1$ $????$ + $?$ $?????$ -$?$ $???$ - $?$
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### On Fri morning I was racing to work and took usual NYC train from Princeton and

I found a piece of paper with these scribbled on it Dark Thunder. X P X ...with P circled Silver Lightning. X X X... What could those X s possibly represent? Hint 1: Given yesterday Hint 2: ...
223 views

### Welcome to my kitchen

Today I mixed some food products and saw interesting outcomes. Silverbeet + Gelatin $\equiv$ Snickers Lime + Nacho $\equiv$ Kiwi Sesame + Tea $\equiv$ Popcorn Can you find how these ...
509 views

### Professor Roman gives unusual math quiz ahead of

His usual Monday Morning 8am class. This is for extra AAA credits. $A$, $B$, $C$ are distinct digits. $AA$, $BA$, $BBAAA$, $CBBBAB$ are distinct numbers. Please deduce these with concise reasoning ...
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### Tom travels extensively all over. He was trying to figure out

The missing members in the following sequence. $A$, $A$, $A$, $A$, $?$, $?$, $?$ Please help him out.
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### A sentence with all numbers [closed]

Crazy thought. Can you make an (grammatically correct) english sentence using english words which are all numbers? Each word in that sentence must represent a number. I am expecting a minimum 6 ...
273 views

### Crazy for revenge

@Brandon_J recently asked us in Can't Even Sit Down to identify a movie based on the words tart con arc host I've also been to see a fun movie from a few years ago, just a short one buck ...
315 views

### Unorthodox Prof. Roman’s Chemistry Class Quiz

Prof. Roman of Chemistry department as you all know is quite unorthodox..here is his Quiz. It is Monday Morning and it is time for Prof. Roman’s unusual quizzes to his chemistry class. What is the ...
315 views

### A simple association between letters and numbers

$X$ is 5. $U$ is 9. $O$ is 0 or 7. $I$ is 4 or 5 or 7. What is $V$? And what is $K$ (two options)?
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### What are the missing members in this sequence based on the digits 0 to 9?

Find the missing members? 0, 0, 2, 0, 2, 3, 0, ?, ?, ? Hint 1
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### Grandpa has another non math question

Grandpa says, " This is not algebra or may be it is! IF X = 2 R + C = 6 B + P = 5 or 6 Then What is I + T ? There are, with my logic, three different answers!"
572 views

### Who is at the mall?

My younger sister wanted to play a game with me. She: You have to say a random word, and I'll tell you a number related to it. In the end, I'll ask you a question, whose answer will open a secret ...
19k views

### Connect 3 houses with 3 wells

Connect every house with every well without the lines intersecting. I am not sure if this puzzle has a solution. I have been puzzled by it for a long long time. An old man from my village mentioned ...
1k views

### The puzzled wife

A lengthy question Once, a woman was getting ready to have a look at three suitors who had come to extend their wishes of marriage "A," "B" and "C." When she was getting ready, a poisonous snake bit ...
607 views

### Find my name from this list of symbols

From the symbols below, find my name? # ! # @ * @ & \$^ # * # \$ #
939 views

### Kara's bitmap picture

Kara recently received a puzzling bitmap image by email in the shape of a trapezoid. She didn't recognize the email address, and she doesn't know why she would be receiving such a picture. She ...
810 views

### Roman Numerals Equation 2

This is a follow up for Roman Numerals equation 1 With your creativity and lateral thinking and any ways you can think of (except the restrictions below), make the following equation correct moving ...
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### Bookshelves: the intruder

Somebody has messed up my bookshelf by shoving a book into completely the wrong place. Which is the intruder?
165 views

### Can you solve this numerical puzzle

Puzzle goes like: 3, 2, 12 10, 4, 9 8, 6, 3 9, 6, 2 7, 4, (?) Can you answer what can be the (?) mark, with explanation
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### Help Aunt Nora solve this puzzle

Aunt Nora has the following images which contain hints to objects used in the production of a specific substance. What is the substance?