The Riddle Thread

[Pichu_XP]

Originally Posted by GuidoHunter

Something, diameter of a circle, area of a circle, area of a sphere...

--Guido

http://andy.mikee385.com

1DAV?
An abbreviation?

[xjohnieboyx]

i feel like a mathematics geek for finding out that sequence, Reach.

should i answer it or let the rest ponder on it?

EDIT: nvm, i don't think i got it. i got something very similar so i might have a negative sign somewhere where it's not necessary

[spyke252]

Expanding on Guido's
point, line, Area, Volume

And for 6)
Could the next term be 490?

[xjohnieboyx]

my next term guess will be -4697.

if it's right, i'll tell y'all how i got it. pretty sure it's right

OK I can't wait i'm going to sleep i have classes tomorrow early in the morning.

Basically, it's simple when you have a calculator.

-(n!)+(n^3)

for example, -(6!)+(6^3) = -720+216 = -504.

[Reach]

I didn't expect anyone to get either of those.

Brilliant, johnie.


More punishment...

7 8 5 3 9 8 1 6 3 ?

mosquito : malaria :: cannibalism : ?

[GuidoHunter]

Have we even gotten number seven?

--Guido

http://andy.mikee385.com

[Reach]

Since you didn't fill in the question mark, no.

[spyke252]

7)1 2are pieare^2 4pieare^3/3 2pie^2are^3 .5pie^2are^4

Correct?

EDIT: OMG, Duh

More punishment:
3

[GuidoHunter]

Asplain?

--Guido

http://andy.mikee385.com

[spyke252]

Originally Posted by spyke252

7)1 2are pieare^2 4pieare^3/3 2pie^2are^3 .5pie^2are^4

Correct?

EDIT: OMG, Duh

More punishment:
3

Explanation:
For 7, 2pi^2r^3 is the 3d volume of a three-sphere.
.5pi^2r^4 is the 4d volume of a three-sphere.
I think.

For the more punishment, we just redid this exact problem in Calc the other day. Expanding pi/4.

[Reach]

Well I'm out of silly number problems for the time being. ;(

[GuidoHunter]

Hm. Never heard of a three-sphere before.

--Guido

http://andy.mikee385.com

[spyke252]

My physics teacher talked to us about it at one point.
In fact, pretty much all of my teachers talk about things that aren't in our curriculums. (Curriculi?)

[Reach]

I didn't expect anyone to get that.

Interesting teachers you have there. My teachers rarely cover anything interesting ;(

So upon trying to get the hardest question I could find...

I found it.

8) Impossible?

121211 121131 123111 ?
222331 221331 211111
123233 121233 111233
221132 222132 221132
323133 321133 111133
112111 111111 111111

(there was something else but I removed it as I was unsure about being allowed to use it).

[RandomPscho]

Whats that something else? And is the ? a whole other set or just the first line?

[Reach]

It might have made it easier. I'm not sure. It was a diagram. I will say you have to fill in the entire column, not just the question mark if anyone was thinking that xd (whole other set, though that is the only way it's solvable anyway.)

I'd say if you can solve it your IQ > 160.

But I am flaming mad right now because of this chemistry assignment (online). The system is so screwed up and picky and the marking is inconsistant and there are mistakes in the questions, errors, URG.

Meanwhile I have a midterm on thursday I could be studying for ;(

rant

[Bahamut-X]

Originally Posted by Reach

4) Extreme

Several straight line segments are drawn on a plane surface in such a way that their intersecting lines form 1,597 areas that are not further subdivided. What is the minimum number of line segments that must be drawn to form the described pattern?

I'm pretty sure this is wrong but is it 1,600?

[Reach]

Originally Posted by Bahamut-X

I'm pretty sure this is wrong but is it 1,600?

Nope. You're off by quite a bit.

[MetsPenguin31]

Im pretty sure its 56 lines.

[Reach]

Originally Posted by MetsPenguin31

Im pretty sure its 56 lines.

Congrats

Pretty simple, wasn't it? XD

I'll leave it unexplained, though ;D