Brain teaser thread

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BigPoppa

Golden Member
Oct 9, 1999
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Ok, here's one:

If your Uncle Jack was stuck on the roof, would you hel....i'll stop right there! ;)
 

Shalmanese

Platinum Member
Sep 29, 2000
2,157
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6 has not been answered correctly yet

zbalat: a crappy CS map with everyone using the invisible cheat :)

imhotepmp: set your clock to 12:00 and walk to your friends house, note the time of arrival and time of departure. when you get home not the total time elapsed and take away the time at your friends house, then divide by 2 to get time of travel and add that to time of departure to get the correct time.
 

NoreagaCNN

Banned
Sep 28, 2000
2,267
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Hmmm let's see

Nore and NoreCNN rob a bank
Nore kills NoreCNN and takes the money
Nore goes to the train station
While waiting for the train, Nore meets a nice old lady, she begins talking to him
Nore falls asleep
The Train comes and Nore tries to get up, he can't
NoreCNN comes and takes the suitcase and leaves with the lady

WTF happened?????

-Nore
 

allan120

Senior member
May 27, 2000
259
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theneuromancer:

Nice job. Only 23 people are necessary in order for there to be a 50% chance that two share the same birthday. I did use Excel, actually. :)
 

thEnEuRoMancER

Golden Member
Oct 30, 2000
1,415
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71
How about this one:

let's assume the Earth has the form of a perfect sphere (no hills or mountains, no flatness near the poles etc) with radius r = 6400 km.

Now you go to a certain point on equator and stick a pole in the ground. Then you tie a thread around the base of the pole (zero elevation from ground). Then you start a long journey around the world, following the equator, unrolling the thread. When you get around the world back to the starting point, this means you have unrolled exactly the length of thread corresponding to the circumference of Earth at elevation zero.

Now you unroll an additional 1 meter of thread.

The question: for what distance should this thread be lifted uniformly from the ground level all around the world so that the 1-meter extended thread would end exactly at the pole? Or with other words, for what amount should the radius of Earth be increased for the length of the extended rope to be exactly the circumference?

First go with your instinct and then do the calculation!
 

hominid skull

Senior member
Nov 13, 1999
971
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thEnEuRoMancER

the answer is 0.0001591549430918953357677 meter raising... all around.. 0.159 of a millimeter!!!!