# All Questions

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### Find the missing number in the series: 253, 495, 143,?

Find the missing number in given series: $253, 495, 143, ?$ $152$ $105$ $903$ $374$ Okay, so I'll tell you what I could do: The first number is $16^2-1$ third number is $12^2-1.$ Moreover, the ...
695 views

### Let's revisit this later (a two player knight's game)

Alice and Bob play a game on the following irregular chessboard. (Note the blacked out squares are not legal moves.) Alice starts the game by placing a knight on any square she chooses. They then ...
343 views

### A powerful vice. Who am I?

Fine, precise, a powerful vice. I draw up blood, thin crimson penned; Yet with never a wound can I contend. Under careful conditions am I used, although on occasion I've been ...
342 views

### A curious circuit

During our latest space mission to Mars, humankind has retrieved a curious alien circuit. Our historians think it must be a calendar of some sort. After speaking with some alien linguists, we know ...
251 views

### Guess the song and artist (3)

Enough of the maths clues (well partially!) - something more literary: Romulus and Remus; Mowgli.
607 views

### The answer to this puzzle is… [closed]

What is the answer? Hints: This puzzle is too vague This puzzle is still incomplete There is not enough information to determine the answer When this puzzle is complete the answer will read as ...
214 views

### Guess the song and artist (2)

$$\lfloor \nabla_{\mu} X_{\nu} + \nabla_{\nu} X_{\mu}\rfloor = 0$$
2k views

### Tell me who I am: To lead, she leads, daughter my

I am not married, but a daughter have I And to lead, she leads, daughter my I was part of the li'l boy that once rocked history I am just you, I ain't a mystery Who am I?
501 views

### You frequently use me on the net. What am I?

I am a six letter word. My 1,2,3 is very abundant on earth. My 2,3,4 is an organ. My 3,4,5 is part of circle You frequently use me on the net. What am I?
125 views

### Good Crosswords [closed]

I'm looking for a good online crossword that I can do when I have breaks in my day. Since I'm a web designer, I want something that has a well designed website. Also, since I like to think I'm smart, ...
337 views

### Who are the guilty parties? #3

You've barely got back from the isolated villa where your last case was, when you hear that you are needed again: There is a group of people on board a yacht. The wealthy owner and her spouse have ...
365 views

### Fitting the pieces

The following grid has been constructed using the shapes of unfolded cubes. Determine the minimum number of shapes (red and green) needed to cover the blue grid. The shapes may overlap, but must ...
570 views

### I am the god who said no more! Who am I?

I am after and before I am the god who said no more! A fraudulent rose, now set free The foundation sat upon me. Who am I? Hint:
328 views

### What can't you learn?

My first riddle, it's probably too easy though. You can get almost any knowledge from one book or another, but there is one thing that is absolutely impossible to learn from a book. What is it? I'm ...
530 views

### Guess the song and artist

\begin{array}{l} &19\times 46=784\\ &56+43=102\\ &360\div 15=29\\ &196-55=114\\ \end{array}
184 views

366 views

### Friday the 13th poser

Find a year that has three Friday the thirteenths in it, either past or future. (That is, find a year where the thirteenth of the month falls on a Friday in three different months.) Find a year with '...
1k views

### Ernie and the slice of Pi

Ernie is a renowned polyglot. Why just last week I saw him helping out at a Mathematics conference by acting as a simultaneous translator for seven guests who only spoke Hungarian, Icelandic, Swahili, ...
198 views

### Magic: the Gathering: Flavor Test

Below is a list of encoded information regarding popular flavor texts of MtG cards. The numbers listed refer to the number of letters in each word of the text. Punctuation has been preserved. The ...
986 views

When the volume of the sound is low, Adam walks home from school. When the volume of the sound is high, he gets a ride. Why?
2k views

### Algorithm for a single diagonal on each face of the Rubik's Cube

Right now I am trying to get the following distorted position: On each face only one diagonal is solved and the rest of the cubes are a different colour than the diagonal. For example: If I am ...
356 views

### Mixed-up quotations

I was looking up some quotations the other day by a famous person. The following three quotations were all made by the same person, but somehow they got mixed up before I could read them. Can you ...