trick of the day [modified]
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I got this trick question today from a friend of mine. I am trying to solve it. i solve 50 percent of the question solved. Note if you have a lot of work don't continue reading cause it will take some time to be solved. The trick question is: You have infront of you 12 eggs. All have the same color the same shape and the same size (you can not diffrentiate between one and the other by just looking at it). 11 of those 12 eggs have the same weight and one differs (either less or more). The question is to find which one of those 12 is the different one. You have a balance and you can use it only 3 times. I will remind you in one important thing that we don't know if the one egg which is different from the others weighs more or less than any of the other 11 eggs. good luck :) if you think you got the solution send your answer to my mail address jamilabkh@gmail.com to leave some time for others to think about it don't post your answers;)
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With 3 trials you should be able to find the different egg out of 27, I think:) Ciao, Gérard
that's not right at all. why don't you post your answer and let us discuss it :doh::doh:
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I got this trick question today from a friend of mine. I am trying to solve it. i solve 50 percent of the question solved. Note if you have a lot of work don't continue reading cause it will take some time to be solved. The trick question is: You have infront of you 12 eggs. All have the same color the same shape and the same size (you can not diffrentiate between one and the other by just looking at it). 11 of those 12 eggs have the same weight and one differs (either less or more). The question is to find which one of those 12 is the different one. You have a balance and you can use it only 3 times. I will remind you in one important thing that we don't know if the one egg which is different from the others weighs more or less than any of the other 11 eggs. good luck :) if you think you got the solution send your answer to my mail address jamilabkh@gmail.com to leave some time for others to think about it don't post your answers;)
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I got this trick question today from a friend of mine. I am trying to solve it. i solve 50 percent of the question solved. Note if you have a lot of work don't continue reading cause it will take some time to be solved. The trick question is: You have infront of you 12 eggs. All have the same color the same shape and the same size (you can not diffrentiate between one and the other by just looking at it). 11 of those 12 eggs have the same weight and one differs (either less or more). The question is to find which one of those 12 is the different one. You have a balance and you can use it only 3 times. I will remind you in one important thing that we don't know if the one egg which is different from the others weighs more or less than any of the other 11 eggs. good luck :) if you think you got the solution send your answer to my mail address jamilabkh@gmail.com to leave some time for others to think about it don't post your answers;)
quiteSmart wrote:
i solve 50 percent of the question solved.
What do you mean by that? An this is a really easy trick to solve ... just try to imagine how would you do in real life! It took me about a minute :-D
company, work and everything else www.netis.ro
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If you know that one egg is heavier, or one is lighter, it's easy. If you just know that one is different, it isn't so simple...
That's the trick here. It would be very easy if we knew which one is heavier. Think more:doh:
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quiteSmart wrote:
i solve 50 percent of the question solved.
What do you mean by that? An this is a really easy trick to solve ... just try to imagine how would you do in real life! It took me about a minute :-D
company, work and everything else www.netis.ro
Balazs Zoltan wrote:
just try to imagine how would you do in real life!
Give me some hint :-D:-D
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that's not right at all. why don't you post your answer and let us discuss it :doh::doh:
27 eggs 1 step: 9 eggs on the left side of the balande, 9 on the right side and nine on the tabel. now you know, in which of 9 eggs is the different one. 2. step: 3 eggs on the left side of the balaance, .... now you know, in which of 3 eggs is the differnt one. 3. step: 1 egg on the left side of the balance,...... Is there a fault??? Ciao, Gérard
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27 eggs 1 step: 9 eggs on the left side of the balande, 9 on the right side and nine on the tabel. now you know, in which of 9 eggs is the different one. 2. step: 3 eggs on the left side of the balaance, .... now you know, in which of 3 eggs is the differnt one. 3. step: 1 egg on the left side of the balance,...... Is there a fault??? Ciao, Gérard
Yes, of the last set which is the odd one out. As you don't know whether it is heavier or lighter you only have a chance of being right. In the last set if the two eggs on the balance (one on each side) are equal it is the one on the table, if the two eggs on the balance are unequal then which is it? It isn't the one on the table, but it is on on the balance - but which? It is still a 50/50 split.
Upcoming events: * Glasgow Geek Dinner (5th March) * Glasgow: Tell us what you want to see in 2007 My: Website | Blog | Photos
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Balazs Zoltan wrote:
just try to imagine how would you do in real life!
Give me some hint :-D:-D
You know one of the eggs is lighter or heavier. So at the 3rd step you put on the balance 1 egg - 1 egg. If the balance shows that the 2 eggs are equal weight the you know the rest. If you have an electronic balance you need to find another way :)
company, work and everything else www.netis.ro
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You know one of the eggs is lighter or heavier. So at the 3rd step you put on the balance 1 egg - 1 egg. If the balance shows that the 2 eggs are equal weight the you know the rest. If you have an electronic balance you need to find another way :)
company, work and everything else www.netis.ro
Read well!!! We don't know which one is heavier:sigh::sigh::sigh:
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You know one of the eggs is lighter or heavier. So at the 3rd step you put on the balance 1 egg - 1 egg. If the balance shows that the 2 eggs are equal weight the you know the rest. If you have an electronic balance you need to find another way :)
company, work and everything else www.netis.ro
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Read well!!! We don't know which one is heavier:sigh::sigh::sigh:
I did, and since you know that one is different by the weight there is a solution.
company, work and everything else www.netis.ro
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I did, and since you know that one is different by the weight there is a solution.
company, work and everything else www.netis.ro
What if the last two didn't match? Now you can't try any more.:sigh:
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I found a solution, through creative googling, and it's way more complex than what I think you're thinking
benjymous wrote:
I found a solution
Can you give us the link...
benjymous wrote:
and it's way more complex than what I think you're thinking
I know very well that it is very complex:)
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I got this trick question today from a friend of mine. I am trying to solve it. i solve 50 percent of the question solved. Note if you have a lot of work don't continue reading cause it will take some time to be solved. The trick question is: You have infront of you 12 eggs. All have the same color the same shape and the same size (you can not diffrentiate between one and the other by just looking at it). 11 of those 12 eggs have the same weight and one differs (either less or more). The question is to find which one of those 12 is the different one. You have a balance and you can use it only 3 times. I will remind you in one important thing that we don't know if the one egg which is different from the others weighs more or less than any of the other 11 eggs. good luck :) if you think you got the solution send your answer to my mail address jamilabkh@gmail.com to leave some time for others to think about it don't post your answers;)
quiteSmart wrote:
either less or more
you're right ... i wasn't paying full atention. if we don't know how the weight difference is (less or more) this is harder :)
company, work and everything else www.netis.ro
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quiteSmart wrote:
either less or more
you're right ... i wasn't paying full atention. if we don't know how the weight difference is (less or more) this is harder :)
company, work and everything else www.netis.ro
:-:cool::cool::rose:
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What if the last two didn't match? Now you can't try any more.:sigh:
Anyway you need to use one of the common eggs (one that has the same weight as the rest of the 10 eggs). And use it as a reference. After that all you have to do is to write down an algorithm with every possible situation there.
company, work and everything else www.netis.ro
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Yes, of the last set which is the odd one out. As you don't know whether it is heavier or lighter you only have a chance of being right. In the last set if the two eggs on the balance (one on each side) are equal it is the one on the table, if the two eggs on the balance are unequal then which is it? It isn't the one on the table, but it is on on the balance - but which? It is still a 50/50 split.
Upcoming events: * Glasgow Geek Dinner (5th March) * Glasgow: Tell us what you want to see in 2007 My: Website | Blog | Photos
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Frank Kerrigan wrote:
nut goop
That would be good to add to the pancake mix, some nuts, making a nut goop. You're full of excellent ideas today! :-D
Upcoming events: * Glasgow Geek Dinner (5th March) * Glasgow: Tell us what you want to see in 2007 My: Website | Blog | Photos
:-D
Blog Have I http:\\www.frankkerrigan.com
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:-:cool::cool::rose:
i got it in 5 minutes but i think i just got lucky... can this really be solved using a mathematical formula? i think i remember someone posting a x=11y+z or something like that... can i give a hint to the solution or is someone else solving? :zzz: :-D
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