I'm surprised that nobody has run a computer simulation for this.
I have read here about million+ hand VP simulations, using all different strategies.
This dice problem seems easier to simulate, but nobody in the 11/1 crowd has offered one.
Pages and pages of debate on at least 2 different forums, but what does the computer simulation show?
You are told TRUTHFULLY that at least one of the two dice in the cup is showing a 2. So again, what are the odds that the second die is also showing a 2? It is still 1/11 for a six sided die? Or is it 1/6?
Respond to the question and its conditions.
The condition is one die is known to be a two. It is not the same as throwing two dice simultaneously and knowing that there are 11 combinations showing at least one two. Repeat: it is not the same as throwing two dice simultaneously and knowing that there are 11 combinations showing at least one two.
This is a reading comprehension issue for those of you who think the answer is 1/11.
Alan, your lack of anything approaching logic is quite hilarious. You even admit .... "If the peeker sees a 2 and a 6, he can truthfully say "at least one die is a two."" In other words, he cannot ALWAYS make the determination until he sees both die when one of them is not a 2. If he sees the 6 first then he has to look at the other die. The fact there are a few times he could make the determination by seeing only one die is NOT sufficient to ALWAYS make the determination. Hence, just looking at one die will not allow him to ALWAYS make the claim "at least one die is a 2".
This entirely negates Regnis claim.
Alan, you really are making a complete fool out of yourself.
Once again here is the original problem:
You have two 6-sided dice in a cup. You shake the dice, and slam the cup down onto the table, hiding the result. Your partner peeks under the cup, and tells you, truthfully, "At least one of the dice is a 2."
What is the probability that both dice are showing a 2?
That is the original question.
NOT
"what are the odds that the second die is also showing a 2?"
arcimede$, in Alan's defence(!) the question doesn't mention multiple dice throws. If just 1 throw is considered, the peeker could have just seen 1 die and truthfully say at least 1 of the dice is a 2.
The peeker might have lucked out, had one of the 11 possible combinations of two dice where at least 1 of the 2 dice is a 2 under that cup and saw that one first when he peeked.
Here's a link to a billion trial simulation
http://wizardofvegas.com/forum/quest...ice-puzzle/41/
I have run a simulation and posted the results 2 years ago or whenever this all started. More interestingly, no one in the 1/6 crowd has the capability of running a simulation. [That was mostly sarcasm, but there's some truth to it.]
The way the sim worked is this -- the dice keep getting rolled over and over again, only counting rolls where at least one die was a '2'. Since at least one die was a 2, it then recorded if both dice were a 2 or not both 2.
You don't need a simulation. Roll two dice, don't set one to a two. When at least one two shows and the other one isn't, mark column A. When at least one two shows and the other one is, mark column B. Column A will out number column B by 11 to 1 after a long sequence of trials.
Amazing to check in to see this still rages on. Eddie's post here and the one in which he stated "arci, in Alan's defense" really defines everything this dice issue is about.
There are absolutely two answers to this "problem" and either is correct depending on how the reader wants to understand the question. Redietz actually identified the complexities of how different individuals might understand the problem, albeit a bit awkwardly as usual.
The "math people" like arci as well as several of these uneducated self-proclaimed "AP's who've been imported from the WoV site, along with the mensa "geniuses" that come out of the infamous pool of libtard atheists, agnostics, queers, and weirdo transgenders over there, all see this problem as a one-way street leading to an 11 to 1 conclusion. In arci's defense, he's a hard core technical person, and he is infinitely trained to see this problem--and its final solution--in only one way: to be an 11:1 result and that is all there is to it. The rest of the 11:1 crew? RS__ & jbjb are simply responding the way they best believe they won't be chided or mocked over on WoV. In other words, they really cannot think for themselves. Mickey however is doing nothing more than taking the opposite position of whatever Alan comes up with because he's always been jealous of Alan and his money, his string of girlfriends, his job, and his basic everyday normal life compared to that of the lowlife, non-productive slug existence mickey endures.
On the other, more grounded side of this resides the people who have no interest in reading anything more or less into the problem than it simply states....while 100% ignoring anything that it may imply. These people seek out an everyday-type answer laced with common sense...and nothing more. And while their adversaries' chief goal is very likely to be making others think how deeply intelligent they can be while the rest of the "dummies" can never attain their special level of being able to dissect and analyze such a problem in ways only a class of Einsteins may begin to understand them, the dumbos know how to "keep it simple, stupid".
So who's got it right? Well, both sides have made an indisputable case for their argument (belief). But it is not really that difficult a problem to figure out--one need not have an engineering degree or be a math or psychology professor at Stanford or Boston College (I had to throw that in ) to come up with a conclusion. It all depends on your reading comprehension.
HOWEVER, if I were a court appointed arbitrator I would rule solidly in favor of the "6" crowd, while giving the "11" crowd honorable mention for their deep insight, unforeseen complex problem solving abilities, ingenuity, and overall argumentative tenacity. Why? Because NOWHERE IN THE ORIGINAL STATED PROBLEM DOES IT MENTION ANYTHING OTHER THAN A ONE TIME TRIAL. If the peeker sees only one die and it is a 2, or if he sees both dice and at least one of them is a 2--and because he doesn't identify which is the case--"6" wins as the simple, common sense conclusion.
Good luck.
You have to understand this gets back to when Alan stated:
"Yes, a "peeker" can see either one die or both dice and say truthfully and correctly "at least one die is a 2." Do you know how to speak the English language Arc?"
He did this in response to me saying he couldn't "ALWAYS" make a determination unless he sees both die. That was my point and for some stupid reason Alan thought his response refuted what I stated. Obviously, Alan doesn't understand what ALWAYS means or he is just belligerent. Since then I've just been baiting him to see what other nonsense he would spew..
You're right Arc, I don't always understand what you say. So let me say it my way:
The peeker only has to see ONE die to truthfully say "at least one of the dice is a 2" if the first die he sees shows a 2.
The peeker does not have to see the second die to say "at least one of the dice is a 2" if the first die he sees shows a 2.
Is this clear now to everyone?
I'm still waiting for jbjb to clarify the conditions in his question regarding the pile of spades and the pile of hearts.
redietz perhaps you should explain one more time the concept of sequential observation.
Rob Singer you gave the 1/6 answer correctly except that you couldn't resist throwing in your usual insults.
Yes everyone in the 1/11 gang -- one out of 11 is what you have when you throw two dice: there are 11 combinations of those two dice that could show a 2 and 1 of those combinations could show 2-2. That's 1/11.
But after two dice are thrown and a peeker sees that at least one die is showing a 2 the odds that the other die is also showing a 2 is one out of the six sides on that single die. That's 1/6.
You must understand the question. You must use the math (or in this case the ability to count to 6) to answer the question that is asked.
You cannot read a question and then apply math that doesn't answer the question being asked. For the thousandth time.
Read.
There are currently 1 users browsing this thread. (0 members and 1 guests)