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JoonasTo
Responsible
Undefeatable Hero
What if Elvin was female?
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posted August 06, 2006 06:54 PM |
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Sorry to say but Iris you are wrong. I can tell the answer if you want or wait if you wanna try again and it is quite hard to follow but to me it seems that you haven't read all sentences correctly.
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DON'T BE A NOOB, JOIN A.D.V.E.N.T.U.R.E.
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angelito
Honorable
Undefeatable Hero
proud father of a princess
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posted August 06, 2006 11:31 PM |
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The diamond is in the Steel box.
Correct answers in the silver box.
Wrong answers in the Steel box.
Splitted answers in the golden box (top true, bottom wrong)
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Better judged by 12 than carried by 6.
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Iris
Responsible
Supreme Hero
of Typos
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posted August 06, 2006 11:49 PM |
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Ah, crap, I had it right the first time. x_X I negated wrong. Twice. I knew I should have written this down. I hate double negatives. 
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friendofgunnar
Honorable
Legendary Hero
able to speed up time
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posted August 07, 2006 08:29 AM |
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Regarding the quarters on the table riddle, both Kooka and Iris had the right idea.
You could summarize the answer like this:
You go first and you place the quarter in the middle. When your opponent places a quarter on the table, you place yours opposite from him in the same location. As long as the opponent is able to place quarters you will have an empty space waiting for you on the opposite side of the table.
Here's another riddle from "Make"
How many trailing zeroes are there in 100 factorial (100!)
(100 factorial is 100*99*98*etc., down to 1)
For example 5,030,499,400,000 has five trailing zeroes.
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JoonasTo
Responsible
Undefeatable Hero
What if Elvin was female?
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posted August 07, 2006 12:32 PM |
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Angelito is correct.
I'm way too lazy to try FoG's puzzle
 so I just wait for someone to tell the way for solving it...
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DON'T BE A NOOB, JOIN A.D.V.E.N.T.U.R.E.
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Gom_Jabbar
Promising
Famous Hero
Revealer of Truth
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posted August 07, 2006 01:21 PM |
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Quote:
How many trailing zeroes are there in 100 factorial (100!)
(100 factorial is 100*99*98*etc., down to 1)
For example 5,030,499,400,000 has five trailing zeroes.
20 zeroes. Don't have the time right now to write dowmn a detailed answe but if you want I'll give it later.
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friendofgunnar
Honorable
Legendary Hero
able to speed up time
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posted August 07, 2006 06:38 PM |
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That is incorrect. You have the right idea though, keep looking...
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Gom_Jabbar
Promising
Famous Hero
Revealer of Truth
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posted August 07, 2006 10:42 PM |
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I'm not in the mood on putting it all on paper right now but as far as I see at first sight there are 21 zeroes(missed one earlier). Probably I'll try and solve it tommorow.
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Iris
Responsible
Supreme Hero
of Typos
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posted August 07, 2006 11:52 PM |
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Edited by Iris at 23:53, 07 Aug 2006.
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I think it's 24.
5, 10, 15, 20...etc. all contribute one 0 --> 20
25, 50, 75, and 100 all contribute an additional 0 --> 4
20+4 = 24.
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friendofgunnar
Honorable
Legendary Hero
able to speed up time
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posted August 08, 2006 02:44 AM |
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Congrats, you got it.
The 25, 50, 75 was the tough part, I didn't get it until I looked up the answer. 
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Iris
Responsible
Supreme Hero
of Typos
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posted August 08, 2006 03:00 AM |
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Okay, I got one.
You have 10 bags of marbles and a scale that can only be used once. Each bag has at least 15 marbles. Nine of the ten bags contain marbles that weigh 10 ounces, and one bag contains marbles that weigh 9 ounces. How can you figure out which bag contains the 9 ounce marbles?
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friendofgunnar
Honorable
Legendary Hero
able to speed up time
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posted August 08, 2006 03:13 AM |
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I got it. 
I remember seeing this one as a kid and not being able to figure it out. (because the answer wasn't available)
anywayz, I'll somebody else a chance to answer...
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JoonasTo
Responsible
Undefeatable Hero
What if Elvin was female?
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posted August 08, 2006 09:57 AM |
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Edited by JoonasTo at 10:20, 08 Aug 2006.
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I'm not sure about this('cause I don't know what kind of scale it is because I'm not that good at English.)
Take 1 marble from first bag, 2 from second...10 from last and after weighting just see how many ounces are missing from 550 ounces and you know which bag has 9 uonce marbles.
I still don't get how you managed to get to that conclusion 100! problem. I get the answer but not that how it comes.
A law problem
Two men are accused of murder. The jury sees the other one quilty and the other not quilty. After that the judge turns to other man and says:
-This is an odd thing! Even though you have been convicted I must let you go.How is this possible?
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DON'T BE A NOOB, JOIN A.D.V.E.N.T.U.R.E.
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Ecoris
Promising
Supreme Hero
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posted August 10, 2006 12:55 PM |
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Here's another one, I don't hope you know it.
A traveller is captured by cannibals in the jungle. They tell him that they're going to eat him, but because they're civilized beings they allow him to choose how he wants to die: He is given 24 hours then he must make a statement. If the statement is true they'll boil him (alive) otherwise they'll grill him.
What should the traveller say?
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JoonasTo
Responsible
Undefeatable Hero
What if Elvin was female?
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posted August 10, 2006 01:14 PM |
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You will grill me.
because if if he lyes they should grill him when what he said is true and they should boil him and if they do that he is lyeing when they should grill him...
...and a paradox is born.
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DON'T BE A NOOB, JOIN A.D.V.E.N.T.U.R.E.
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Ecoris
Promising
Supreme Hero
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posted August 10, 2006 01:16 PM |
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But they could just start out boiling him and then grill him afterwards.
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dimis
Responsible
Supreme Hero
Digitally signed by FoG
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posted August 11, 2006 03:05 PM |
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TV-show riddle - Intuition
Quote:
Quote:
Extension:
Now, suppose that for a pretty long series of episodes the amount of times a player wins the BIG PRESENT is about 50%. Can you give a reasonable explanation of this 50%-50% that is observed?
What if two thirds of the people that get an offer to switch actually stay with the box that they picked originally? That would explain why the final result is still 50/50.
You are very near FoG, but this is not entirely accurate. Actually, what you describe should converge to 4/9. Does this help you somehow? The answer is really funny and educating I believe.
@ all those who still object: Let's try something different that helps your intuition: Suppose that instead of 3 we have 1000 boxes initially. One of them has the big present and the rest are empty. Now, on the first phase you make a choice and the "show-man" opens-up 998 boxes (of course not revealing the big present). Do you still believe that it is 50%-50% on the remaining 2 boxes? 
I 'll come back for the entire solution at around August 20. Till then, have fun and ... enjoy the sun! 
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The empty set
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Gom_Jabbar
Promising
Famous Hero
Revealer of Truth
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posted August 11, 2006 05:53 PM |
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Quote:
But they could just start out boiling him and then grill him afterwards.
"I will die grilled." That should save him.
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Ecoris
Promising
Supreme Hero
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posted August 13, 2006 09:46 PM |
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Quote:
Quote:
Quote:
Extension:
Now, suppose that for a pretty long series of episodes the amount of times a player wins the BIG PRESENT is about 50%. Can you give a reasonable explanation of this 50%-50% that is observed?
What if two thirds of the people that get an offer to switch actually stay with the box that they picked originally? That would explain why the final result is still 50/50.
You are very near FoG, but this is not entirely accurate. Actually, what you describe should converge to 4/9. Does this help you somehow? The answer is really funny and educating I believe.
It's very easy: The prize is in one of the boxes, therefore if they pick one of the last two at random they'll win 50% of the time. The explanition is: 50% choose the other box.
Quote:
@ all those who still object: Let's try something different that helps your intuition: [...]
It can be done even simpler: If you decide not to switch you have to pick the right one right away. This gives you 1/3.
Concerning the riddle I posted:
Quote:
"I will die grilled." That should save him.
Well they could just boil him afterwards, right? (even though it would be bad taste to boil something you just grilled). The cannibals did not say that they would either grill him or boil him.
Come on, the answer is close.
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friendofgunnar
Honorable
Legendary Hero
able to speed up time
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posted August 25, 2006 06:13 PM |
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Let's go bowling!
When you play a game of bowling you bowl 10 "frames". Each frame starts with 10 pins and you get 2 chances to knock down the 10 pins. You're score for each frame is the number of pins you knock down. After you bowl the two balls the pins are set up again for the next frame.
If you knock down all 10 pins in one frame, you get what's called a "spare". You get 10 points (for knocking down all 10 pins) and then you get a bonus depending on how many pins you knock down with your next ball. This means that when you get a spare you leave the space blank and then roll the ball and then fill in the score afterwards.
For example:
You knock down 6 pins, then you knock down 4 pins. (This is all 10 pins and you get a spare.)
In the next frame you knock down 5 pins and then you knock down 3 pins. (this is not a spare)
Your score for the original frame (the spare) will be 6 + 4 + 5 equals 15
Your score for the second frame will only be 5 + 3 = 8
If you knock down all 10 pins in one roll, you get a "strike". Your bonus for a strike is the number of pins you knock down in the next two balls.
Example 1:
You roll a strike.
The next frame you roll a 5 and then you roll a 3
Total score for first frame is 10 + 5 + 3 = 18
Example 2:
You roll a strike.
The next frame you roll a 6 and then you roll a 4 (a spare)
The next frame you roll a 7 and a 3
Total score for the first frame is 10 + 6 + 4 = 20
Total score for the second frame is 10 + 7 = 17
Total score for the third frame is still undecided...
Example 3:
You roll a strike
The next frame you roll a strike.
The next frame you roll a 6 and a 3
The score for the first frame is 10 + 10 + 6 = 26
The score for the second frame is 10 + 6 + 3 = 19
The score for the third frame is 6 + 3 = 9
Thus if you roll 3 strikes in a row you will get 30 points for the original frame. If you get a strike in the last frame (the tenth) you will get two extra bonus balls (they are kind of a phantom frame, who's only purpose is to decide the bonus for the last frame). If you get a spare in the last frame you will get one extra bonus ball.
Thus if you roll 12 strikes in a row, you will get a perfect game: 300 points.
Here's the riddle: What is the minimum number of strikes that you must roll in order to achieve a score of 250?
What is the maximum number of strikes that you may roll without going higher than 250?
As an interesting FYI, when bowling was an olympic demonstration sport, almost all the scores hovered between 285 and 300 if I remember correctly.
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