# All Questions

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### What do these countries have in common?

The following alphabetical list contains independent countries with a certain common property. (The list is complete to the best of my knowledge). Australia, ???, Chile, Costa Rica, Cuba, ???, ???, ...
473 views

### Bumblebees and Honey bees

The current market price of 175 honey bees is more than the price of 125 bumblebees, but less than the price of 126 bumblebees. Is it possible to buy 3 honey bees and 1 bumblebee for altogether at ...
2k views

### Longest alphabetical sentence [closed]

What is the longest alphabetized (by first letter) sentence you can construct? For example, consider these "words": be, a, fish, elephant, crashed, dead If this were a sentence, it would be valid:...
3k views

Edit: added link for geocheck I have been working on trying to solve this puzzle for months and cannot come up with any solution. I have learned lots of puzzle solving methods in the process but I ...
2k views

### English words with the most consonants, all voiced or all unvoiced

What English words containing only voiced or only unvoiced consonants contain the most? Count each consonant as many times as it appears. Note that this is a question about the sounds (phonemes) ...
299 views

### Looks like ECB — What story is this?

Secrets Revisited A friend sent me the following and wanted to find out if anyone could figure it out. The message was encrypted three times, and all keys and primers were provided. It appears that ...
300 views

### Yet another group of five sequence puzzles

This is my third batch of sequence puzzles that are nasty and hard to solve; yet, each of them has a clear and justifiable solution. Sequence 1: 2, 4, 4, 3, ?, ?, 3, 4, 2, 4, 3, 4, 2, 2, 3, 4, 4,...
4k views

400 views

### How many magazines?

You would like to sort some monthly magazines in different categories. Disregarding the title of magazines, there are 4 different categories if you arrange magazines by publishing year and month. ...
950 views

### Mousehunt cryptogram

I found this puzzle within the game Mousehunt It didn't seem to match any rune system that I know of. Rotating the image also didn't seem to show any useful information, although the first word when ...
1k views

### Filling chess pieces in smallest area

You have 2 bishops, 2 rooks and 2 knights (of no colour). Place them in as small a rectangle as possible such that each piece can be captured by atleast 2 other pieces in a single move. Bishops have ...
525 views

### Quick and dirty: painting a fence

There are four fences, which are geometrical identical (same heigth and same length). The following four people need the specified time to paint it: Bob needs 2 hours. Simon needs 3 hours. Tommy ...
732 views

### The Erasmus isosceles triangle

Professor Erasmus has constructed a special isosceles triangle that he modestly calls the "Professor-Erasmus-triangle". The professor claims that he can cut his triangle into three smaller triangles, ...
4k views

### Very simple, yet unsolved, sequence of numbers

A simple sequence of numbers, which I encountered during intermediate school, in my math book. Any person that finished intermediate school possesses the necessary toolbox required to solve this ...
2k views

### How to solve this 7x8 grid with partially and completely filled squares?

I've tried looking at the paper from different angles, and nothing is jumping out at me. I'm not sure what to try next. Thanks!
2k views

### Touching matchsticks with compass and straightedge

The question Touching Matchsticks asked for the smallest matchstick graph where every node is connected to four distinct edges. The Harborth Graph is the smallest such, with 104 edges connecting 52 ...