Maths Gym for Brainiacs
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Re: Maths Gym for Brainiacs
Will try this again later, preferably half drunk.
Where's Surag at? Indians are awesome at math.
Where's Surag at? Indians are awesome at math.
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Re: Maths Gym for Brainiacs
Really?Sushi Master wrote:Will try this again later, preferably half drunk.
Where's Surag at? Indians are awesome at math.
You were very close to the answer I like your never give up attitude
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Re: Maths Gym for Brainiacs
x+1=y1
2*(x1)=y+1  2x  2 = y + 1
y = x + 2
2x  2 = (x + 2 ) + 1
2x  2 = x + 2
x 4 = 0
x = 4
y = 5
9 members in total ?
2*(x1)=y+1  2x  2 = y + 1
y = x + 2
2x  2 = (x + 2 ) + 1
2x  2 = x + 2
x 4 = 0
x = 4
y = 5
9 members in total ?
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Re: Maths Gym for Brainiacs
Are you tired? Everything is right except for the way you left out 1RealGunner wrote:x+1=y1
2*(x1)=y+1  2x  2 = y + 1
y = x + 2
2x  2 = (x + 2 ) + 1
2x  2 = x + 2
x 4 = 0
x = 4
y = 5
9 members in total ?
And y=x+5, how did you manage to get y=5? If x=4 in your wrongly calculated version, then y should be 6 y=4+2
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Re: Maths Gym for Brainiacs
lol yea, doing a project at the same time
so
14 members lol ?
so
14 members lol ?
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Re: Maths Gym for Brainiacs
Still wrong, correct your initial calculation calmly and you'll get the resultRealGunner wrote:lol yea, doing a project at the same time
so
14 members lol ?
Just continue here...RealGunner wrote:x+1=y1
2*(x1)=y+1  2x  2 = y + 1
y = x + 2
2x  2 = (x + 2 ) + 1
2x  2 = x + 3
.
.
.
.
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Re: Maths Gym for Brainiacs
ffs, can't even do basic maths.
I will get back to this tomorrow lol, but someone will solve this by then
I will get back to this tomorrow lol, but someone will solve this by then
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Re: Maths Gym for Brainiacs
x = 5?
so y = 7?
so y = 7?
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Re: Maths Gym for Brainiacs
BiasedMilanFan3 wrote:
Don't be scarred, nerds won't eat you
Right onLord Hades wrote:x = 5?
so y = 7?
51=4 ...........7+1=8........2*4=8
5+1=6...........71=6
Last edited by Kamina on Fri Feb 03, 2012 1:04 pm; edited 3 times in total
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Re: Maths Gym for Brainiacs
Next question, goallegacy troll edition
Once upon the time, GL had 200 members to start off with. Among them were trolls and non trolls. Trolls, if asked whether they are one, they never said the truth Non trolls, of course, always stated the truth. Seeing each other posting everyday, all the 200 knew among themselves who is a troll and who isn't
Redoranje tried to find out how many trolls were present in those days. He made a survey:
1.) He asked, "how many trolls are in GL?", the first one answered " there's at least one troll in GL", the second one said " there're at least 2 trolls in GL" and so on, the last one said " there're at least 200 trolls in GL"...
How many trolls did Redoranje find with his survey?
(junior high level)
2). Redoranje wasn't satisfied with his first survey. He started a new one with the question " how many trolls are exactly present in GL?"
Again, the first one answered " there's exactly one troll in GL", the second " there're exactly 2 trolls in GL" and so on, the 200th said " there're exactly 200 trolls in GL"
What were Redoranje's results from his improved survey?
( logic question, everyone who could count up to 200 is able to answer theoretically)
Lord Hades, if you know the answer, PM me
Once upon the time, GL had 200 members to start off with. Among them were trolls and non trolls. Trolls, if asked whether they are one, they never said the truth Non trolls, of course, always stated the truth. Seeing each other posting everyday, all the 200 knew among themselves who is a troll and who isn't
Redoranje tried to find out how many trolls were present in those days. He made a survey:
1.) He asked, "how many trolls are in GL?", the first one answered " there's at least one troll in GL", the second one said " there're at least 2 trolls in GL" and so on, the last one said " there're at least 200 trolls in GL"...
How many trolls did Redoranje find with his survey?
(junior high level)
2). Redoranje wasn't satisfied with his first survey. He started a new one with the question " how many trolls are exactly present in GL?"
Again, the first one answered " there's exactly one troll in GL", the second " there're exactly 2 trolls in GL" and so on, the 200th said " there're exactly 200 trolls in GL"
What were Redoranje's results from his improved survey?
( logic question, everyone who could count up to 200 is able to answer theoretically)
Lord Hades, if you know the answer, PM me
Last edited by Kamina on Fri Feb 03, 2012 1:05 pm; edited 3 times in total
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Re: Maths Gym for Brainiacs
can your question be solved by arithmetic progression kamina?^^
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Re: Maths Gym for Brainiacs
Yeah, but you could also do without. The questions were quite misleading, I proof read and corrected the excerciseLord Hades wrote:
can your question be solved by arithmetic progression kamina?^^
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Re: Maths Gym for Brainiacs
i always used to like ap so ill try it by that method
okay
i am a bit confused
is the first question an example of bernoulli's trial?
okay
i am a bit confused
is the first question an example of bernoulli's trial?
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Re: Maths Gym for Brainiacs
doesnt the first question depend on the distribution of trolls and non trolls since we dont know which is which. trolls would lie and non trolls would tell the truth?
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Re: Maths Gym for Brainiacs
is second answer 200?
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Re: Maths Gym for Brainiacs
YeahLord Hades wrote:doesnt the first question depend on the distribution of trolls and non trolls since we dont know which is which. trolls would lie and non trolls would tell the truth?
Lord Hades wrote: i always used to like ap so ill try it by that method
okay
i am a bit confused
is the first question an example of bernoulli's trial?
The question is at junior high level. I know of no JH schools which teach Bernulli's trial
NoLord Hades wrote:is second answer 200?
Last edited by Kamina on Fri Feb 03, 2012 4:12 pm; edited 1 time in total
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Re: Maths Gym for Brainiacs
bit say we dont know who is a troll and non troll.. for eg the guy in the end who said that there are at least 200 trolls , if he is a non troll the answer would be different from the one if he was a troll right?
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Re: Maths Gym for Brainiacs
You're on the right trackLord Hades wrote:bit say we dont know who is a troll and non troll.. for eg the guy in the end who said that there are at least 200 trolls , if he is a non troll the answer would be different from the one if he was a troll right?
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Re: Maths Gym for Brainiacs
Kamina wrote:You're on the right trackLord Hades wrote:bit say we dont know who is a troll and non troll.. for eg the guy in the end who said that there are at least 200 trolls , if he is a non troll the answer would be different from the one if he was a troll right?
yeah but how do i answer the question without knowing how many of the 200 are trolls and non trolls?
does it depend on whether the 200th person is a troll or non troll in which case there are two answers?
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Re: Maths Gym for Brainiacs
You just have to focus of the nature of Redoranje's question For starters, you only know, there're trolls and non trolls but you don't know the exact number of each groupLord Hades wrote:Kamina wrote:You're on the right trackLord Hades wrote:bit say we dont know who is a troll and non troll.. for eg the guy in the end who said that there are at least 200 trolls , if he is a non troll the answer would be different from the one if he was a troll right?
yeah but how do i answer the question without knowing how many of the 200 are trolls and non trolls?
does it depend on whether the 200th person is a troll or non troll in which case there are two answers?
That's proper maths for you, not the halfbacked pseudo intellectual questions
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Re: Maths Gym for Brainiacs
wow i just found this thread and i love maths
However, This is friggin statistics i hate that... give me pure maths and ill do it
ill guess for the first one you gonna have to use 0.5 somewhere since there are only two outcomes troll and nontrolls and the maximum number of posters are 200... i think this will help you solve it
However, This is friggin statistics i hate that... give me pure maths and ill do it
ill guess for the first one you gonna have to use 0.5 somewhere since there are only two outcomes troll and nontrolls and the maximum number of posters are 200... i think this will help you solve it
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Re: Maths Gym for Brainiacs
Kamina wrote:Next question, goallegacy troll edition
Once upon the time, GL had 200 members to start off with. Among them were trolls and non trolls. Trolls, if asked whether they are one, they never said the truth Non trolls, of course, always stated the truth. Seeing each other posting everyday, all the 200 knew among themselves who is a troll and who isn't
Redoranje tried to find out how many trolls were present in those days. He made a survey:
1.) He asked, "how many trolls are in GL?", the first one answered " there's at least one troll in GL", the second one said " there're at least 2 trolls in GL" and so on, the last one said " there're at least 200 trolls in GL"...
How many trolls did Redoranje find with his survey?
(junior high level)
2). Redoranje wasn't satisfied with his first survey. He started a new one with the question " how many trolls are exactly present in GL?"
Again, the first one answered " there's exactly one troll in GL", the second " there're exactly 2 trolls in GL" and so on, the 200th said " there're exactly 200 trolls in GL"
What were Redoranje's results from his improved survey?
( logic question, everyone who could count up to 200 is able to answer theoretically)
Lord Hades, if you know the answer, PM me
if trolls were asked that were they trolls they would lie right? but redoranje just asked them how many troll are there . so they would also speak the truth right? so the last one said there at least 200 trolls in gl .. assuming that he is speaking the truth 200 is the right answer since ther arent more than 200 members? for the first question?
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Re: Maths Gym for Brainiacs
No To which question do you refer, to the first or second one? Your assumption should be, there's at least one troll and one non troll. This way, you can't get 200 trolls even if you wanted toLord Hades wrote:Kamina wrote:Next question, goallegacy troll edition
Once upon the time, GL had 200 members to start off with. Among them were trolls and non trolls. Trolls, if asked whether they are one, they never said the truth Non trolls, of course, always stated the truth. Seeing each other posting everyday, all the 200 knew among themselves who is a troll and who isn't
Redoranje tried to find out how many trolls were present in those days. He made a survey:
1.) He asked, "how many trolls are in GL?", the first one answered " there's at least one troll in GL", the second one said " there're at least 2 trolls in GL" and so on, the last one said " there're at least 200 trolls in GL"...
How many trolls did Redoranje find with his survey?
(junior high level)
2). Redoranje wasn't satisfied with his first survey. He started a new one with the question " how many trolls are exactly present in GL?"
Again, the first one answered " there's exactly one troll in GL", the second " there're exactly 2 trolls in GL" and so on, the 200th said " there're exactly 200 trolls in GL"
What were Redoranje's results from his improved survey?
( logic question, everyone who could count up to 200 is able to answer theoretically)
Lord Hades, if you know the answer, PM me
if trolls were asked that were they trolls they would lie right? but redoranje just asked them how many troll are there . so they would also speak the truth right? so the last one said there at least 200 trolls in gl .. assuming that he is speaking the truth 200 is the right answer since ther arent more than 200 members? for the first question?
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Re: Maths Gym for Brainiacs
For you,halamadrid2 wrote:wow i just found this thread and i love maths
However, This is friggin statistics i hate that... give me pure maths and ill do it
ill guess for the first one you gonna have to use 0.5 somewhere since there are only two outcomes troll and nontrolls and the maximum number of posters are 200... i think this will help you solve it
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When does the mildew spread the fastest?
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Post answer and why
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Re: Maths Gym for Brainiacs
Kamina wrote:No To which question do you refer, to the first or second one? Your assumption should be, there's at least one troll and one non troll. This way, you can't get 200 trolls even if you wanted toLord Hades wrote:Kamina wrote:Next question, goallegacy troll edition
Once upon the time, GL had 200 members to start off with. Among them were trolls and non trolls. Trolls, if asked whether they are one, they never said the truth Non trolls, of course, always stated the truth. Seeing each other posting everyday, all the 200 knew among themselves who is a troll and who isn't
Redoranje tried to find out how many trolls were present in those days. He made a survey:
1.) He asked, "how many trolls are in GL?", the first one answered " there's at least one troll in GL", the second one said " there're at least 2 trolls in GL" and so on, the last one said " there're at least 200 trolls in GL"...
How many trolls did Redoranje find with his survey?
(junior high level)
2). Redoranje wasn't satisfied with his first survey. He started a new one with the question " how many trolls are exactly present in GL?"
Again, the first one answered " there's exactly one troll in GL", the second " there're exactly 2 trolls in GL" and so on, the 200th said " there're exactly 200 trolls in GL"
What were Redoranje's results from his improved survey?
( logic question, everyone who could count up to 200 is able to answer theoretically)
Lord Hades, if you know the answer, PM me
if trolls were asked that were they trolls they would lie right? but redoranje just asked them how many troll are there . so they would also speak the truth right? so the last one said there at least 200 trolls in gl .. assuming that he is speaking the truth 200 is the right answer since ther arent more than 200 members? for the first question?
was referring to the first question..
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