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0
votes
0answers
17 views

What is the next number in the sequence and why?

7 4 11 2 14 5 18 3 21 ? Find the next number in the sequence?
0
votes
0answers
28 views

help on this!? sticks and circles logic [on hold]

I'm completely stuck on this logic problem, which was on a school test given by my math teacher (8th grade) and who I assume wrote the problem? Can anyone help me understand? I have tried to figure ...
-1
votes
1answer
168 views

Can someone help me solve this riddle? [on hold]

Together with my brethren, we bend nature’s will You think me insubstantial, never making myself a burden Yet at the end of my days, I lie alone forgotten You spurn to touch me where I lie, ...
5
votes
1answer
65 views

A partially ugly group with a casual secret

I’ve assembled a group with nine members but you’ll have to guess what their names are. One letter from each name will spell the name of a 10th group member that everybody talks about but nobody ...
0
votes
0answers
24 views

Need help in this number puzzle / reasoning [on hold]

I came across this number puzzle . I need help for solving . I think it has something do with square . The centre number is perfect square
3
votes
0answers
94 views

Red means go, green means danger

Bitterly regret the quip, poisonous part of stage chatter goes away. (7, 6)
9
votes
0answers
69 views

A mysterious story that will leave you in the dark (1)

This is the story of a man: He was designing a booster rocket that could put people on the moon. (3) Every day he would drink a whole pot of hot coffee. (2) One day he knocked his mug off the ...
3
votes
1answer
52 views

Crack this rhyme

You can see me inside bars and also inside the stars. Some may call me a key, The above line is a clue to thee! My brothers are bigger than me, I again say, the above line is a clue to thee! ...
4
votes
1answer
75 views

Density type puzzle 2

Here's another puzzle of this type. Perhaps my next one will be complex enough to require the full $72$ x $72$ size. Final answer: (5,2,5)
0
votes
0answers
32 views

Is it necessary to state that there is a logician with a blue hat in this 100 logicians puzzle? [duplicate]

I've been discussing the logic puzzle where 100 logicians, all wearing blue hats, are trapped in a room and told: they can leave when a bell rings if they know they know they are wearing a blue hat, ...
2
votes
2answers
114 views

Solve the last equation

My brother showed me the following puzzle from some type of (IQ?) quiz game on his phone: 1 + 2 = 21 2 + 3 = 36 3 + 4 = 43 4 + 5 = ?? I am quite sure this was the original question asked. ...
9
votes
1answer
267 views

Hangman game backward #12

Time to get back to Puzzling! Hangman game backward #12 - guess what the question was: fill in "a" - In some area it proves to be a big problem to kids / teens or even adults these day, which ...
0
votes
2answers
65 views

What is the objective function of the magic square? [on hold]

If I wanted to describe it as a minimum problem, where I want to identify the minimum value of the constant for a certain matrix order, how should I do it?
0
votes
0answers
74 views

Frequent or rare?

Which common thing do these words have uncommonly in common? mole kiss breath Note, that until you have not found the answer, it helps you find your way back to the real world.
2
votes
2answers
137 views

SAME DIGIT NUMBER PUZZLE

You have 5 numbers 1, 9, 3, 5, and 7 you need to arrange these number like Rules create 2 pairs from numbers above keep one of the number in the middle then apply this law ...
2
votes
1answer
85 views

A subset of a subset of a subset of a subset of a set of $\{1,2,\cdots,10\}$

There is a set of $10$ first natural numbers, $S = \{1,2,\cdots,10\}$. Alice picks a subset of it, say $A \subseteq S$. Bob picks a subset of it, say $B \subseteq A$. Charlie picks a ...
7
votes
2answers
594 views

Paint numbers from 1 to 23 with three colours

Can you paint every number from 1 to 23 with three colours, such that there are no distinct numbers $𝑎,𝑏,𝑐$ of the same colour with $𝑎+𝑏=𝑐$? For example, you cannot have 2, 3 and 5 of the same ...
5
votes
1answer
345 views

Paint numbers from 1 to 8 with two colours

Can you paint every number from 1 to 8 with two colours, such that there are no distinct numbers $a, b, c$ of the same colour with $a+b=c$? For example, you cannot have 2, 3 and 5 of the same colour ...
0
votes
2answers
423 views

Help me solve this riddle!

Can you help me figure out what word this riddle is about? Not spun, or simply woven My skin as smooth as a mirror You stain my face, contort my body I can hold the greatest power ...
0
votes
0answers
92 views

A visual crack the code puzzle

Just have this now what are all these acronyms refer to and what is the code ?
10
votes
1answer
290 views

Double feature: Legal trouble

This puzzle is part 6 of the Double feature series (first part here). The series will continue in "Double feature: Weightier". Rules of Hitori1 Shade some cells in the grid. No ...
7
votes
1answer
80 views

Density type puzzle

Inspired by this puzzle I decided to make something similar. To warm up, I made something simple. It follows the rules set up by @Dmihawk except for the size: Final answer: (1,6)
14
votes
1answer
1k views

What is a Spaceman Word™?

In the spirit of the What is a Word™/Phrase™ series started by JLee, a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Spaceman Word™. Use the following ...
7
votes
1answer
159 views

Identify the odd one out element

There are two columns (two sets), in each set there is a pattern among the 7 elements. The elements are not arranged in any order, the two patterns are not necessarily the same, but they are related ...
0
votes
1answer
77 views

Word Square - AXLE

Fill in ~ with letters to create a real words vertically, horizontally, and diagonally. Vertical and horizontal words have to be the same: ~ A ~ ~ A X L E ~ L ~ ~ ~ E ~ ~ Edit: Final
1
vote
1answer
89 views

Last Person Remaining Avoids Death [duplicate]

There are 1600 people sitting around a circular table. The first person (person 1) has a sword and kills the second person then hands it to the next alive person (in this case person 3). Person 3 ...
4
votes
0answers
80 views

Message for my club members

Two people in particular have come to my Codes and Ciphers Club almost every week. One of them is always expecting a certain message to appear in the weekly puzzles, so of course I can't include it, ...
3
votes
4answers
121 views

Hilfe White Rochade!

It’s Black to move. What must Black do in order to help White castle queenside in just 11 moves?
4
votes
1answer
175 views

Do I Ressemble a Cheetos?

Can your criticisms please stop? All you say are crap Robert, stop teasing me for my height Raphaelle, i don’t care if I ressemble a Cheetos Oh my dear lord, I’m Tearing ...
13
votes
1answer
643 views

A jazzy one-liner

Standing next in turn in good mood; finished "Straight, No Chaser" with a fast tempo. What the Thelonious are we describing?
17
votes
3answers
1k views

Twelve Labours - #03 Golden Hind

This puzzle is part of the ‘Twelve Labours’ series. Previous instalments can be found here: Prologue | 01 | 02 Hercules was grateful the morning sun wasn’t hotter as he pulled the heavy flatbed ...
1
vote
2answers
152 views

Truth of OR - Logical puzzle

This puzzle is not very difficult but it is knowledge based. In front of you there are 4 switches. From these switches there are 4 right combinations to open the gate to the control room. You can ...
5
votes
1answer
188 views

Identify the Drink Given Other Info

There is a smooth dance, a ball sport, a country's capital, a month, and a drink. What's the drink?
8
votes
1answer
323 views

Double feature: In cold blood

This puzzle is part 5 of the Double feature series (first part here). The series will continue in "Double feature: Legal trouble". Rules of Nurikabe1 Shade some cells in the grid. ...
8
votes
2answers
220 views

Hand tiling puzzle demonstrating Eisenstein triple $c^2 = a^2 -ab + b^2$

An Eisenstein triple is related to 60 degree triangles and a special case of the cosine law. But we need not worry about that except to note that a specific example of an Eisenstein triple is $7^2 = 5^...
6
votes
1answer
198 views

The Wee County begriddled puzzle

Update: This puzzle is NOT UNIQUELY SOLVABLE. I meant it to be. Red face. (Nick Rice, 17 Oct.) I live in Britain's smallest historic county - Clackmannanshire, in Scotland. It is often referred to ...
5
votes
1answer
155 views

The Strange Abductor

Someone, or something, has been abducting members of your community! Though no deaths are reported, recovered victims are said to have suffered from a severe, albeit temporary, case of what could best ...
6
votes
3answers
610 views

Number Equation Matrix

Can somebody please solve this? My daughter's school teacher gave her this puzzle to solve at home. But to me it seems a little out of order, and that's why I am asking here for help.
-16
votes
2answers
259 views

Which animal does this weird thing? [on hold]

Which reptile eats its skin after sunbathing? HINT:
1
vote
1answer
57 views

Find the missing number (number sequence puzzle) [duplicate]

Find the missing number 56784 = 4 11111 = 0 72348 = 3 88652 = 5 88811 = 6 75213 = 0 65465 = 3 62257 = ? I found this quiz in an archive of our company's ...
-6
votes
0answers
100 views

Can you solve it..it's very specious to me.please [on hold]

. important... please sovle .....................
-4
votes
0answers
77 views
20
votes
3answers
2k views

Can you put L trominos to fill the figure?

In the above picture, there are 24 squares. Can you only use L trominos to fill the figure? If yes, give an example. Otherwise, please explain why. An L tromino is like this:
12
votes
4answers
1k views

A pencil in a beaker of water [on hold]

You have a beaker containing 100ml of (slightly salty) water, standing on a digital scale. The scale has been calibrated to the beaker so that it shows only the weight of the water, which is exactly ...
4
votes
3answers
507 views

Carousel Seating Logic Puzzle

Puzzle from my good friend and fellow Sporcle user, AuroraIllumina! Eight children are riding the carousel: four girls (Anna, Beth, Claire, Diana), and four boys (Eric, Frank, George, Henry). It is ...
0
votes
1answer
76 views

In this cylindrical tank, by how much will the level of the water rise? [on hold]

there. In the following picture is a puzzling question from a primary school math exercise booklet for selective high school exams in Australia. I don't think enough information is provided to solve ...
0
votes
0answers
50 views

Question from the internet Mensa IQ Test #31 [duplicate]

I did the Norwegian Mensa web IQ test at http://test.mensa.no/. I have tried to solve this exercise for a day, but with no luck. I'm still puzzled by this exercise.
5
votes
1answer
419 views

Super Secret Cookbook

You requested the password for a super secret cookbook and received an SMS with the following content: 77733666688833 2555555 777772222337777 2663 777337555222233 84433 6688622337777777 9444844 ...
0
votes
2answers
89 views

City of thieves [duplicate]

During school I studied some cryptography and creating a story about it, I was able to create this riddle! I hope you like it <3 In one country all the inhabitants are thieves. Items cannot ...
8
votes
2answers
201 views

What is the word described in this poem?

My beginning is a time for a leader to lead. My middle is a type of insect seed. My end is a talk that’s shorter than a screed. I increased a problem that was losing all its speed. What am I?

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