# 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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### What number completes the sequence? 2, 1, 7.5, ...,

What number completes the sequence? 2 , 1 , 7.5 , 6.5 , 5 , 6.5 , 7.5 , 5 , 6.5 , 7.5 , 1 , 6.5 , 7.5 , 6.5 , 5 , 4.5 , ...
2k views

### I am international anyway

When I was zero, I was Central African. When I was one, I was Japanese. When I was two, I was Laotian. When I was three, I was Dominican. When I was four, I was Danish. When I was five, I was ...
465 views

### Letters and numbers that share something in common

Why are these two "equations" true? L + I = 900 7 + 1 = 405 Note: They're not all super accurate, but accurate enough once you realize the method I used to make this little puzzle. No ...
944 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 ...
270 views

### Think creatively and prove [closed]

Doing some Lateral Thinking can you prove 19 = 7 Hint
1k views

### Turn it into a city [closed]

Move exactly 2 matchsticks to turn this number into a city
946 views

### How many Pigeons are there?

There are pigeons sitting in a queue. The first one said, "There are 4 pigeons behind me." The last one said, "There are 4 pigeons in front of me." The middle one (or, one of middle ones) said, "There ...
2k views

### Where is he working?

Inspired by @Will Octagon Gibson Beginner Puzzles, here is my attempt. My friend said, "My manager asked me to do an inventory at this Specialty Shop I am working at right now. I counted 160 bags,...
390 views

### Two digits in one

Here is a digit: However, it is, at the same time, another digit. How can it be?
2k views

### A riddle with seemingly-unrelated clues

I am Catholic, but my boss isn't the pope. I am black, but people say I'm light. Moving one step, I can play a chord. What am I?
508 views

### Numbers reminding me of cities

I look at these numbers and they can be related to cities. Which? Why? 35108 1710 50337 Think creatively.
1 vote
176 views

### Quick find the unique answer, it may not be unique otherwise!

Replace the question mark with the correct 5-digit number. ...
5k views

### Make the number 606 50 percent bigger

Beginner puzzle This puzzle is intended to be suitable for people who are new to puzzle solving. Clarification: Both experienced solvers and new solvers are welcome to post solutions to this puzzle. ...
981 views

### The Famous Five

What does this picture represent and why?
2k views

### The London safes and their secret combinations

Here's the first riddle I invented for Puzzling SE. Hope you'll enjoy solving it. This story takes place during World War II. A German spy is assigned the task to sneak overnight into a military base ...
202 views

### Dramatic follow-up 3D masyu problem

This is follow-up problem for Another four 3D masyu Your little dog has been abducted by aliens, and they will do unthinkable things to it. That is unless you provide solutions for problems C and D, ...
1 vote
520 views

### This bird is so popular, many countries around the world share a name with it

There's a bird, it's very popular. Several IRL Earth countries (more than 2) around the world share a name with the same bird, although the relation between the country name and the bird is not ...
306 views

### A Venndredi Special!

Another Venn based puzzle from me. The three overlapping ellipses form seven curved regions. Your task is to place exactly one tile per region, so that the four tiles in any one ellipse can solve ...
1k views

### Alternative solutions to a Michael Rabin puzzle

I first heard the puzzle below around 1990 while working at Carnegie Mellon University; the puzzle was attributed to Michael Rabin. After solving it, I realized that alternative solutions are ...
1k views

### I am obviously not a thief!

Tearing from fearing, Thumbs nervously interlocking because of the robbing, Since the cheating done in that meeting, So in the center of a dark alley I hide, Like a rudiment the heart pounds at my ...
922 views

### Data is plural?

The three overlapping ellipses form seven curved regions. Your task is to place exactly one tile per region, so that the four tiles in any one ellipse can solve the corresponding clue!
311 views

### What was her sentence suggestion?

I'm a judge, and I'm currently judging a littering case. I was going to go with the usual sentence of a public hanging, but when I texted my friend she gave me a much better idea The problem is that I'...
2k views

### Four-cornered cow inheritance

While travelling down a road in a socialist country you meet a group of four young men and women sitting in the front porch of their house, with a lively cattle ranch adjoining. "Our father died, ...
797 views

### Mr. Martin And The Mismanaged Airport Terminal

There is a small international airport in Greece. It has just 6 gates, lined up from 1 to 6 going away from the front desk. Tickets here only have the last names of passengers and gate numbers clearly ...
1k views

### Compare and you'll see they're not all the same (Keep them LARGE)

Find the odd-one-out... ...
267 views

### Simple number sequence puzzle

Complete the sequence: 8, 6, 7, 3, 6, 5, 4, 5, 5, 2, ?
279 views

### Another Little Number riddle!

Please try your best to solve the puzzle below GOOD LUCK!! ...
167 views

### A little number riddle

Try your best to solve the puzzle below GOOD LUCK!!! Explain why 1=0 2=0 3=0 4=0 10=0 And 7=1 8=1 9=1 But 5=2 6=2 11=2 12=2
469 views

### Is this another affix-riddle to Really Bore You?

My ‘prefix’ is a ‘prime’ My ‘infix’ is a combination of ‘primes’ My ‘suffix’ is found between ‘primes’ My whole is often found at the origin of a very long sequence! What am I? Small hint: Moderate ...
290 views

### The Question of the Seven Barbies

This question reminded me of this brainteaser I first saw, in an extended format, in a mystery manga from my younger days. I bought my young niece a seven-pack of Barbies for Christmas. (Okay, they ...
788 views

### Missing A Figure

Out of all the elements of a specific set, a subset of 7 elements have a special property. Your job is to replace the question mark so that the list below becomes complete.
386 views

### Became out of reign

I created this puzzle today: THEPE:MON:NOTEA (US) …. … ..h The puzzle above wants you to fill in the blanks Edit: I just made it maybe a little easier to work out Hint: Big Hint: Hint
150 views

### Time Rules - a fraud case

Agent J of Time Rules, a sub-division of the Bureau of Inter-temporal Fraud Force (BIFF) shook his head. Since 2041, when quantum computers had inadvertently created entanglement through time, rogue ...
178 views

### Double Scramble 2: End of Year Scramble?

Following on from the Scary Sequence is another overly done scrambling. We have a sequence that is doubly scrambled (both the order and the terms themselves). Can you reverse out the sequence and re-...
849 views

### A very presentable number sequence

(The title holds a clue) 12,22,30,36,40,42,42,40… Here is a finite sequence. Can you tell me the sum of all of its numbers?
250 views

### Once upon a tile in Hollywood

Bon Venndredi, the three overlapping ellipses create seven disjoint regions. Each ellipse represents an as yet unknown category. Your job is to place the tiles in the regions and deduce the ...
2k views

### Can One Solve This Scary Sequence?

The following terms appear in a sequence. Unfortunately, they are scrambled (both the original terms and their order). Theory, Policeman?, Contest, Clarice, Bad Act, One in Rome, Fashionable, Confess,...
1 vote
1k views

### Move one matchstick to create a three-letter word

On a table, you have several matchsticks as arranged below. Your objective is to move a single matchstick to create a three-letter word. Which matchstick do you move, and how do you move it?
2k views

### Find the secret word in this encrypted image (part 2)

While walking around aimlessly and bored, you find a piece of paper on the sidewalk containing a heck of a lot of numbers. Normally someone seeing that would be like "ain't nobody got time for that" ...
639 views

### How to sell at the buying price and still have something in hand? [closed]

A farmer walked into the cattle market and found the price is fixed at "5 for 2 coins", either buy or sell. He thought a little and then bought cattle of 250 cows for 100 coins (250/5 * 2). ...
1k views

### A number sequence in disguise

What number should replace the question mark? Explain why. ...
410 views

Cinderella was returning home from taking Bruno on a Christmas Day walk. She passed by her lounge window on the way to her front door and decided to spy on what her ugly sisters were doing inside. ...
2k views

### Take BOSS to a SHOW, but quickly

Start with the word BOSS Change one letter to get another word. Change another letter and you will get the SHOW (the word SHOW that is)! Can you do it that quickly? No rearranging letters.
1 vote
328 views

### Equality-breaking function

There's a function that satisfies the following: $f(2) = 1, f(2^2) = 2, f(-3^3) = 3$ $f^n(x) = 3(n-1) + f(x)$ Where $f^n$ means $f$ composed with itself $n$ times. Lastly, $f$ is not equality ...
4k views

### Turn 1111 into zero [closed]

Draw exactly two non-touching straight lines to turn 1111 (as shown below) into zero. Note: A minus sign is one line
309 views

### When I said I used sugar in coffee, I was asked, "For tea, too?"

My road is filled with answers, and my body has the hints, but it is in my head where the question sits. My shoes are brand new, hence their tags. Can you end my walk down this road with an answer-...
1 vote
579 views

### A question from Bob to Bob

Set-up: John and Bob are playing a game that goes like this: Bob is alone in a completely opaque, featureless room. Bob chooses a question, though some types of questions are off-limits, which will ...
2k views

### Move a coin without touching it

There are three coins lying flat on a table, arranged in a straight line with their edges touching. Call the coins A, B, and C (B is in the middle). Here are the rules: You can touch and move only ...