lil game

Post by **sharky** » Wed Nov 14, 2007 1:47 am

lets see who solves it.. its an easy one. when it is solved i post the next one..

SCORE

Likay:_________8,5pts
LukePC1: ______8,5pts
A.J.: __________3,5pts
Mel: __________3,5pt
Jahun: ________2pts
mastRmind:____0,5pts

every quiz has different rules. this one for example gives MINUS points for wrong answers because it is easy..

ok easy one: i made a business-travel and when i came back home, my mother asked me how long i was on the ship, and how long i was on the plane. the whole trip took 8 days. and i told my mother that i was a week longer on the ship than on the plane.

how long was i on th eship and how long on the plane?

bye

sharky

Post by **Mel** » Wed Nov 14, 2007 8:46 am

0.5 day on plane, 7.5 on ship?

Post by **LukePC1** » Wed Nov 14, 2007 3:21 pm

Yeah that should be the correct answer

But isn't 0,5 day to unexact?
I think it might be 12 hours on Plane and 7 days 12 hours on ship

Lets wait for the next one.

Post by **sharky** » Thu Nov 15, 2007 2:03 am

good mel..

here is another easy one, same rules as above.. this is the last easy one, the next will be more difficult!

you have 2 sandclocks. the first one counts 4 minutes, the second one 7 minutes.

how can you time exactly 9 minutes using only these two sandclocks?

bye

sharky

Post by **LukePC1** » Thu Nov 15, 2007 9:13 am

It's not that easy. I needed several minutes

0min Start 4 and 7 min clock
4min 4 min clock runs out turn it over
7min 7 min clock runs out turn it over to measure again
8min 4 min clock runs out 2nd time. 7 min clock has sand for 1 minute in it, so turn it over - to measure the last minute

9min The 7 min clock has expired with the time. If you were very fast (no time needed to turn the glasses) you have the exact time - at least mathematically

I hope you understand it all right

Post by **sharky** » Thu Nov 15, 2007 10:12 am

good!

ok this one is a bit more tricky..

3 points if you solve, -1 if you answer wrong

ok, if you have a regular Poligon with 13 edges (every side same length) and connect thre edges toghether you allways get a triangle. in "%" how many chances do you have that the triangle ahs all sides of the same length?

NOTES:
1)every edge, counts a s single edge, so every triangle form you get, can be rotated, until the position is the same again!
2)possibility in % is calculated this way: NUMBER OF CORECT ANSWERS / NUMBER OF POSSIBLE POSITIONS x 100
3) it is like the one on the left picture, but with 13 edges instead of 8

have fun

Post by **Likay** » Thu Nov 15, 2007 3:49 pm

Should be 0%. dare me. lol

The number of the polygons corners need to be dividable with three to get a triangle with equally long sides.

cheers

Post by **sharky** » Thu Nov 15, 2007 4:00 pm

superb! its the ebst answer you could give!

ok a bit of physics...

immagine a ideal 100% thermic isolated room. (no temprature exchane with outside fo the room). the room is empty, except for a fridge in th emiddle of the room.

the fridge is connected to the power supply and is PROPERLY working.. nothing damaged.

the door of the fridge is open. what happens with the temperature in the room?

3 answers are possible. the first one gives -1 pt, the second one gives -0.5 pt and the third one gives 3 pts..
the answer MUST also have a explanation. have fun..

Post by **Jahun** » Thu Nov 15, 2007 4:18 pm

it gets warm

It is conservation of energy since the room is isolated.
You "burn" electric energy into heat. It doesn't matter there is a fridge or an oven.

A fridge only displaces energy.. and it does it inefficiently (and it does not evaporate energy either), so the room gets hot.

Post by **sharky** » Thu Nov 15, 2007 4:25 pm

hehe great!

lets go with the next one!

how much do approximatly 10000 balls of steel with 1 mm diameter weight?

NO CALCULATOR PERMITTED!

-0.5 for wrong answers
1 pt for correct.

it only has to be near, not exact!

ist more a guess

Post by **Jahun** » Thu Nov 15, 2007 4:56 pm

tralala was nothing here, move on..

Post by **sharky** » Fri Nov 16, 2007 2:05 am

ahaha maybe it was correct, but it was a tried answer, so - 0.5 ....

sorry..

bye

Post by **LukePC1** » Fri Nov 16, 2007 7:22 am

wight of one:
If Diameter 2 = 2*Radius then:

3/4 * pi* r^3 * specific gravity
That's about 3/4*pi * 1/20^3 *spec grav
= ca. 9/4*1/8000 cm3*7,8g/cm3
= ca 9*8/4*8000 g
= ca 9 /4000 g
= ca 9/4 mg
= ca 2,25mg

10000*2,25mg = 22,5g

That makes a little sense, because 10*10*10 balls are nearly the fist cm3...

Post by **sharky** » Fri Nov 16, 2007 9:03 am

huh wrong..

-0.5

you have 2 mistakes..

Post by **LukePC1** » Fri Nov 16, 2007 10:05 am

What I'm wrong

Yeah I rounded two values (pi and the specific gravity) but since we shouldn't use calculaters and you said we should guess, that shouldn't be a problem...

I'm interested to see, what is right, though.
Maybe someone can calculate

Post by **Freke1** » Fri Nov 16, 2007 10:58 am

I thought of this:
http://www.3d.wep.dk/MIS/ivegotballsofsteel.wav

but I don't know the answer -
http://www.3d.wep.dk/MIS/Damn.mp3

Post by **sharky** » Fri Nov 16, 2007 11:35 am

the wrong part is NOT in the precision of the number... reread the quiz and compare it with your calculation

Post by **Likay** » Fri Nov 16, 2007 12:09 pm

Are we having fun Sharky?

This topic reminds me of a friggin teacher i had (a good one though). He loved to ask questions where no matter what you answered the answer was wrong.

You say you have approximately (probably not exactly) 10000 1mm diameter steelballs. Then i say the weight of them is something close to the weight of 10000 1mm diameter steelballs depending on how precise your approximation is.

In other words the weight of those balls is approximately the same as the weight of 10000 1mm diameter balls of steel. lol

hehe. couldn't resist. Cheers

Post by **sharky** » Fri Nov 16, 2007 1:09 pm

hey i dont count this as answer.. i hope youre joking..

you all think too complex.. i am going to post th eanswer tomorrow morning if nobody finds it..

Post by **LukePC1** » Fri Nov 16, 2007 1:24 pm

1.) maybe this quest is to hard/gives to less points...

I've got a simple Idea:
The wight is dependent on the gravity (I think that's the tearm and I hope that is what is searched).

So the answer is: They don't weight anything, if they're in Space e.g.
If they're near sun (or a Black Hole...), they weight a LOT

edit: just fixed a missing word

Post by **Likay** » Fri Nov 16, 2007 1:43 pm

Hehe. as said i couldn't resist. Looking forward to the answer though since i'm hooked up on this little braintwister. lol

cheers

Post by **sharky** » Fri Nov 16, 2007 2:35 pm

luke your wrong again! you were very near in the first post, just didnt read carefully.. you all think so COMPLEX!

i give a little hint.. start with the weight of 1 dm3 of steel wich wieghts approx 7.8 kg. and then start to divide by 10 until you get the 10000 mm3... then convert that APPPROXIMATELY to the volume of spheres.

after this hint the points you can get is 2!

Post by **LukePC1** » Fri Nov 16, 2007 4:22 pm

LukePC1 wrote:wight of one:
If Diameter 2 = 2*Radius then:

3/4 * pi* r^3 * specific gravity
That's about 3/4*pi * 1/20^3 *spec grav
= ca. 9/4*1/8000 cm3*7,8g/cm3
= ca 9*8/4*8000 g
= ca 9 /4000 g
= ca 9/4 mg
= ca 2,25mg

10000*2,25mg = 22,5g

That makes a little sense, because 10*10*10 balls are nearly the fist cm3...

I found one mistake... its the formula for the volumen.
it should be 4/3 not 3/4... But is there another mistake?

4/3 * pi* r^3 * specific gravity
That's about 4/3*pi * 1/20^3 *spec grav
= ca. 12/3*1/8000 cm3*7,8g/cm3
= ca 12*8/3*8000 g
= ca 4 /1000 g
= ca 4 mg

10000*4mg = 40g
but if that's the only mistake I had less than 50% to less of the answer. There has to be something else...

Post by **sharky** » Fri Nov 16, 2007 4:44 pm

still wrong.. youre way to complex! make it easy! follow the hint! and REREAD the question!

Post by **A.J.** » Fri Nov 16, 2007 6:21 pm

Trying my luck, 0,078 kg?

Post by **Jahun** » Fri Nov 16, 2007 9:27 pm

Volume of sphere is half the volume more or less of the box.

So boxes are 1mm^3 you have 10000 = 10000 mm^3 or 10cm^3 which is 0.01 dm^3 which is 0.078 kg = 78g

Ah crap, AJ has same thing

Post by **sharky** » Sat Nov 17, 2007 2:36 am

ok guys all wrong.. AJ and Jahun got the right path, but forgot to remove the approx 45% wich is APPROX the difference between the volume of the cube and the volume of the ball. (47,7777% is the correct value)

so the correct answer is:

1 dm?= 1.000.000 mm?
10.000 mm? = 1dm?/100
||
V
m = (m.cube/100) - 45%
m = (7800g/100) - 45%
m = 78g - 45%
m = 43 g

lukepc1 was srong because the following error:

LukePC1 wrote:
wight of one:
If Diameter 2 = 2*Radius then:

3/4 * pi* r^3 * specific gravity
That's about 3/4*pi * 1/20^3 *spec grav
= ca. 9/4 * 1/8000 cm3 * 7,8g/cm3
= ca 9*8/4*8000 g
= ca 9 /4000 g
= ca 9/4 mg
= ca 2,25mg

10000*2,25mg = 22,5g

he calculated with diameter=2 so radius= 1... in my first post i wrote that the diameter is 1 so the radius is 0,5.
in line 2 you write this: That's about 3/4*pi * 1/20^3 *spec grav 3/4 pi is part of the calculation. 1/20 should be the radius in cm wich corrects the error you made earlier.

in your last post, i saw "1/20" and thought that you still struck with diameter 2.. but rechecking now its correct. so i give you back the 0.5 i removed and add 2 pts.. sorry for my mistake..

i post the new one now:

2 points if right, -2 if wrong.:

write a number made of 10 numbers... like 1523647890
the 1st number indicates how many "1" there are in the number, the 2nd number indicates how many "2" are in the number, and so on. the 10th number indicates how many "0" are in the number.

have fun!

sharky

Post by **A.J.** » Sat Nov 17, 2007 9:28 am

2100010006

Post by **sharky** » Sat Nov 17, 2007 10:36 am

good..

next one.. 2 pts if right -2 if wrong

there are two rooms. the two rooms are connected trough a door, wich is closed. you are in room A. in room A there are also 3 switches, wich switch the 3 lights placed in room B. if you enter in room B you cant go back to room A. how can you know exactly wich switch switches wich light?

bye

sharky

Post by **Likay** » Sat Nov 17, 2007 5:28 pm

If the lamps are ordinary types and not for example LED ones you can use the heating as an extra option to know which one's which. Then you should be able to fix it. I assume that you cant see the lamps even if you press one of those switches and tries to see which lamp it is from room A...
Do like this:
Turn one switch on and leave it for some minutes. (or a halfhour to be sure that lightbulb get heated. lol)
Turn that switch off and turn another switch on and quickly exit room A.
The lamp that is lit corresponds to the second switch and the lamp that's heated but not lit corresponds to the first switch...
How to find out about the third? You figure it out.

ps: you can also do it other ways but that extra option is still the heated lightbulb.

cheers

Post by **Neil** » Sat Nov 17, 2007 6:06 pm

Can you just open the door and look without going in the room?

Neil

Post by **sharky** » Sun Nov 18, 2007 5:39 am

heh good job likay! youre in front or the mass and running away... neil should i give you minus points?

ok, now a really difficult one... 4 points if correct -1 if wrong

there are 5 houses, with 5 different colors.
in every house lives a person with a different nationality.
everyone of them drinks, smokes and has an animal.
drink, cigarettes and animals are different for everybody.
here are the hints:
1 the russian lives in the white house
2 the italian has the birds
3 the german drinks milk
4 the red house is at the left of the yellow one
5 the guy who lives in the red house drinks beer
6 the person who smokes blend has dogs
7 the person who lives in the blue house smokes blue master
8 the owner of the house in the center drinks coffee
9 the spanish guy lives in the first house
10 the person who smokes Dunhill has a neighbour who has mouses
11 the person with cats lives near who smokes blue master
12 the person who smokes prince drinks water
13 the french smokes pall mall
14 the spanish guy lives near the green house
15 the person who smokes dunhill has a neighbour who drinks tee.

the question is: who has the horses?

have fun! dont search the solution on the web, i messe dup the whole quiz! cheaters get -4 points!

Post by **Likay** » Sun Nov 18, 2007 6:52 am

May i use pen and paper?. lol. this one is not for me... haha

cheers

Post by **sharky** » Sun Nov 18, 2007 7:33 am

yes ofcourse..

Post by **LukePC1** » Sun Nov 18, 2007 9:48 am

What does 'near' mean? Are they neighbours, or are do they just live in the same street, or maybe the neighbour of the neighbour (second neighboar)?

Post by **sharky** » Sun Nov 18, 2007 9:53 am

immagine it this way:

Code: Select all

     *            *            *            *            *       
    / \          / \          / \          / \          / \    
  /     \      /     \      /     \      /     \      /     \   
/         \  /         \  /         \  /         \  /         \  
|         |  |         |  |         |  |         |  |         |  
| house 1 |  | house 2 |  | house 3 |  | house 4 |  | house 5 |
|         |  |         |  |         |  |         |  |         |  
|_________|  |_________|  |_________|  |_________|  |_________|

Post by **A.J.** » Sun Nov 18, 2007 9:59 am

I solved it with a little help from Excel, but do I have to tell you every step on the way?

Post by **sharky** » Sun Nov 18, 2007 10:11 am

however you want..

the answer is important.. :)but it would be cool..

Post by **sharky** » Sun Nov 18, 2007 10:15 am

HEY! i found a new hobby!

Code: Select all

                                 ____
          \ /             __c===(  ) ) 
         - O -           (___(____(___)   
          / \
     *         __  *             *             *  _          * __      
    / \       |  |/ \         _ / \           / \| |        / \||    
  /     \     | /  O  \      |/     \       /     \|      /     \   
/wwwwwwwww\   /_________\   /         \   /_________\   /~~~~~~~~~\  
|         |   |         |   |         |   |         |   |         |  
| house 1 |   | house 2 |   | house 3 |   | house 4 |   | house 5 |
|o    o   |   |         |   |         |   |         |   |         |  
|__[]_____| v |______[]_| v |[]_______| v |_______[]| v |___[]____|  
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv    
vvvv vvv vvvv vvv  vvv vvvv vvv vvvv vvvv vvvv vvvvv vv vvvv vvv vv
vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv vv v
v   v   v   v  v  v  v  v   v   v  v   v   v   v v  v  v v  v v  v 
 v   v    v     v     v      v       v       v      v      v      v
   v    v        v     v        v      v      v   v    v       v 
v          v               v          v            v         v

Post by **A.J.** » Sun Nov 18, 2007 11:01 am

Umm, ok, I'll try, at least the parts I still remember:

spanish guy lives in the first houses near green house, so green house is either 2nd or 3rd. 1st house can't be red or yellow, which leaves blue for 1st house, since white is for russians.

blue house smokes blue-master, so 2nd or 3rd house has cats.

1st house drinks tea, because because Germans drink milk, middle house drinks coffee, red is for beer and water is for prince smokers.

2nd house smokes dunhill because it's next to tea and mouses are either 1st or middle house.

Blend smokers have dogs so they can't be italians, also 1st and 2nd house can't have dogs.

5th house can't be red so that leaves milk and water for drinks for 5th house.

2nd house can be either milk or water but water is for prince smokers, so 2nd house is occupied by germans. So 5th house drinks water and smokes princes. 4th house drinks beer and is red. This makes 5th house yellow.

Also 5th house is italians because russians are in white house and french smoke pall mall.

4th house is red so it can't be russians, which makes 4th house french and middle house russian (and 2nd green). Also middle house smokes blend now.

No need going further because only animals left for the french in the 4th house is horses.

So french have the horses.

the whole thing:

1st house blue,spanish, tea, blue-master,mouses
2nd house green, german, milk, dunhill, cats
middle house white, russian, coffee, blend, dogs
4th house red, french, beer, pall mall, horse
5th house yellow, italian, water, prince, birds