ISF Logo   IS Forum
Forum Index Register Members List Events Mark Forums Read Help

Go Back   International Skeptics Forum » General Topics » Science, Mathematics, Medicine, and Technology
 


Welcome to the International Skeptics Forum, where we discuss skepticism, critical thinking, the paranormal and science in a friendly but lively way. You are currently viewing the forum as a guest, which means you are missing out on discussing matters that are of interest to you. Please consider registering so you can gain full use of the forum features and interact with other Members. Registration is simple, fast and free! Click here to register today.
Tags math puzzles

Reply
Old 6th July 2017, 05:43 PM   #41
theprestige
Penultimate Amazing
 
Join Date: Aug 2007
Posts: 23,229
Originally Posted by William Parcher View Post
You actually read 1755 answers to this question?
I'm now twice as old as when I started reading this thread

This signature is intended to irradiate people.
theprestige is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 05:47 PM   #42
Dr.Sid
Graduate Poster
 
Join Date: Sep 2009
Location: Olomouc, Czech Republic
Posts: 1,277
Your sister died in car accident, when she was 3. How could you forget about that ? You are bad person.
Dr.Sid is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 05:48 PM   #43
Distracted1
Master Poster
 
Join Date: Dec 2007
Location: Philadelphia
Posts: 2,032
Originally Posted by Mike! View Post
At least 13, but no more than 14.
Could be as young as 10
__________________
The man with one watch knows what time it is, the man with two watches is never sure.
Distracted1 is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 05:51 PM   #44
Red Baron Farms
Illuminator
 
Red Baron Farms's Avatar
 
Join Date: Apr 2013
Location: Oklahoma
Posts: 4,049
Originally Posted by theprestige View Post
I'm now twice as old wrong as when I started reading this thread

This signature is intended to irradiate people.
ftfy
__________________
Scott
"Permaculture is a philosophy of working with, rather than against nature; of protracted & thoughtful observation rather than protracted & thoughtless labour; & of looking at plants & animals in all their functions, rather than treating any area as a single-product system." Bill Mollison
Biome Carbon Cycle Management
Red Baron Farms is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 05:52 PM   #45
Red Baron Farms
Illuminator
 
Red Baron Farms's Avatar
 
Join Date: Apr 2013
Location: Oklahoma
Posts: 4,049
Originally Posted by Mike! View Post
At least 13, but no more than 14.
no
__________________
Scott
"Permaculture is a philosophy of working with, rather than against nature; of protracted & thoughtful observation rather than protracted & thoughtless labour; & of looking at plants & animals in all their functions, rather than treating any area as a single-product system." Bill Mollison
Biome Carbon Cycle Management
Red Baron Farms is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 05:56 PM   #46
William Parcher
Show me the monkey!
 
William Parcher's Avatar
 
Join Date: Jul 2005
Posts: 18,003
Originally Posted by Red Baron Farms View Post
Not that I saw, but I am sure even you can get it right if you just stopped playing it off as stupid and simply tried solving it like the math puzzle it remains.
You already told me my answer of 14 was correct. I got that correct answer by treating it as a math puzzle.
__________________
Bigfoot believers and Bigfoot skeptics are both plumb crazy. Each spends more than one minute per year thinking about Bigfoot.
William Parcher is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 05:56 PM   #47
theprestige
Penultimate Amazing
 
Join Date: Aug 2007
Posts: 23,229
A=4
S=A/2
...
S=2
...
A=S+2

And thus:

S=12
A=S+2
...
A=14

This signature is intended to irradiate people.
theprestige is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 05:59 PM   #48
theprestige
Penultimate Amazing
 
Join Date: Aug 2007
Posts: 23,229
Originally Posted by Red Baron Farms View Post
ftfy
Now you're just being an *******, RBF.

This signature is intended to irradiate people.
theprestige is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 05:59 PM   #49
Red Baron Farms
Illuminator
 
Red Baron Farms's Avatar
 
Join Date: Apr 2013
Location: Oklahoma
Posts: 4,049
Originally Posted by William Parcher View Post
You already told me my answer of 14 was correct. I got that correct answer by treating it as a math puzzle.
14 is not wrong it is simply incomplete. That should be a huge hint to you and others who have all been dancing around the answer but all missing it somehow.

It's analogous to the square root of 4 being 2......and/or -2.
__________________
Scott
"Permaculture is a philosophy of working with, rather than against nature; of protracted & thoughtful observation rather than protracted & thoughtless labour; & of looking at plants & animals in all their functions, rather than treating any area as a single-product system." Bill Mollison
Biome Carbon Cycle Management
Red Baron Farms is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:00 PM   #50
Red Baron Farms
Illuminator
 
Red Baron Farms's Avatar
 
Join Date: Apr 2013
Location: Oklahoma
Posts: 4,049
Originally Posted by theprestige View Post
A=4
S=A/2
...
S=2
...
A=S+2

And thus:

S=12
A=S+2
...
A=14

This signature is intended to irradiate people.
__________________
Scott
"Permaculture is a philosophy of working with, rather than against nature; of protracted & thoughtful observation rather than protracted & thoughtless labour; & of looking at plants & animals in all their functions, rather than treating any area as a single-product system." Bill Mollison
Biome Carbon Cycle Management
Red Baron Farms is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:01 PM   #51
jadebox
Graduate Poster
 
jadebox's Avatar
 
Join Date: Sep 2004
Location: USA
Posts: 1,308
I am sure that the "correct" answer has to do with the leap years. Like someone said ... the OP is engaging in pedantic silliness. The answer of 14 is correct enough.
jadebox is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:04 PM   #52
Elagabalus
Graduate Poster
 
Join Date: Dec 2013
Posts: 1,792
14 to 14.5
Elagabalus is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:04 PM   #53
theprestige
Penultimate Amazing
 
Join Date: Aug 2007
Posts: 23,229
Originally Posted by Red Baron Farms View Post
ftfy

This signature is intended to irradiate people.
theprestige is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:06 PM   #54
Distracted1
Master Poster
 
Join Date: Dec 2007
Location: Philadelphia
Posts: 2,032
Originally Posted by jadebox View Post
I am sure that the "correct" answer has to do with the leap years. Like someone said ... the OP is engaging in pedantic silliness. The answer of 14 is correct enough.
Leap years need not be considered if 4 years means 4 years ( 365.25 days times four) in that case the date is meaningless no?
__________________
The man with one watch knows what time it is, the man with two watches is never sure.
Distracted1 is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:08 PM   #55
Elagabalus
Graduate Poster
 
Join Date: Dec 2013
Posts: 1,792
Originally Posted by theprestige View Post
A=4
S=A/2
...
S=2
...
A=S+2

And thus:

S=12
A=S+2
...
A=14

This signature is intended to irradiate people.
A=4+x where x is between 1 and 364 days.

Somebody else due the math coz I suck at it.
Elagabalus is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:15 PM   #56
Jim_MDP
Philosopher
 
Jim_MDP's Avatar
 
Join Date: Sep 2002
Location: N.Cal/S.Or
Posts: 6,044
We're all watching the Kobiashi Maru, and RBF is soon to proclaim victory for having reprogrammed the scenario.
__________________
----------------------
Anything goes in the Goblin hut... anything.

"Suggesting spurious explanations isn't relevant to my work." -- WTC Dust.
"Both cannot be simultaneously true, and so one may conclude neither is true, and if neither is true, then Apollo is fraudulent." -- Patrick1000.
Jim_MDP is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:16 PM   #57
William Parcher
Show me the monkey!
 
William Parcher's Avatar
 
Join Date: Jul 2005
Posts: 18,003
Originally Posted by Red Baron Farms View Post
Not that I saw...
So did you post the true correct answer at the forum site where 1755 people got it wrong and nobody got it right including the person who posted the puzzle?

I'm slightly concerned that you believe you might be the only person anywhere that knows the answer. You haven't mentioned ever seeing the correct answer. You've said that the people posting in this thread are VERY VERY smart. Yet we are all not really correct and YOU ARE.

Are you like the smartest person on earth, or is your answer going to be something where people then argue that you aren't really right but rather are posing an opinion?
__________________
Bigfoot believers and Bigfoot skeptics are both plumb crazy. Each spends more than one minute per year thinking about Bigfoot.
William Parcher is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:16 PM   #58
ynot
Philosopher
 
ynot's Avatar
 
Join Date: Jan 2006
Posts: 7,065
I suspect the claimed “correct” answer will include something silly like a person being born on Dec 31, 2016 is one year younger than a person born on Jan 1, 2017.
__________________
Rumours of a god’s existence have been greatly exaggerated.
ynot is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:18 PM   #59
RussDill
Philosopher
 
Join Date: Oct 2003
Location: Charleston
Posts: 5,407
We could consider half as old counted by days, leaving out leap day and counting by integer days. 4 years old is between 1460 days and 1824 days inclusive. That means the sister is between 730 days and 912 days inclusive.

You are between 1824-730=1094 days and 1460-912=548 days older than your sister. If your sister is 12 and just had her birthday, then you are at the minimum 13 (548 mod 365 = 1). If your sister's birthday is tomorrow, you are maximum 15 ((1094+364) mod 365 = 3). You could also be 14.

We could also consider half as old counted as integer years, again leaving out leap days and counting only integer days. Here you are 4 years old and your sister is 2 years old. So the max difference is you are 4 * 365 + 364 = 1824 and your sister is 2 * 365 = 730. So a difference of 1094 days. The min difference is you are 4 * 365 = 1460, your sister is 2 * 365 + 364 = 1094. So a difference of 366 days. This gives the same result as the above. Using the min difference on your sister's birthday makes you one year older. Using the max difference on the day before your sister's birthday makes you 3 years older.

BTW, if this is a pedantic thing about people born on leap year only having a birthday every 4 years, I swear...
__________________
The woods are lovely, dark and deep
but i have promises to keep
and lines to code before I sleep
And lines to code before I sleep
RussDill is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:22 PM   #60
theprestige
Penultimate Amazing
 
Join Date: Aug 2007
Posts: 23,229
Originally Posted by Elagabalus View Post
A=4+x where x is between 1 and 364 days.

Somebody else due the math coz I suck at it.
That's not a math puzzle, that's math homework.

Not that the OP is much of a math puzzle itself. Either RBF sucks at basic algebra, or RBF sucks at reckoning age in the customary manner, or RBF is playing at far more silly buggers than they're ready to admit.

At this point their best option might be to *not* reveal the answer. Whatever it is, it won't live up to the hype or overcome the ill will.

I gotta figure that if 1700 people see and solve a simple math problem, then that is pretty much the correct answer. At that point anything else is effectively the hipster douchebag answer.

This signature is intended to irradiate people.
theprestige is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:26 PM   #61
Jim_MDP
Philosopher
 
Jim_MDP's Avatar
 
Join Date: Sep 2002
Location: N.Cal/S.Or
Posts: 6,044
Originally Posted by William Parcher View Post
... or is your answer going to be something where people then argue that you aren't really right but rather are posing an opinion?

Don't care how old she is... the bitch stole $100 from a grocer, then spent it back at the same store. She claims no one lost out.

Did I mention she's a bit dim?*

(*she's interning at the White House this summer... doing IT with Baron I believe )


__________________
----------------------
Anything goes in the Goblin hut... anything.

"Suggesting spurious explanations isn't relevant to my work." -- WTC Dust.
"Both cannot be simultaneously true, and so one may conclude neither is true, and if neither is true, then Apollo is fraudulent." -- Patrick1000.

Last edited by Jim_MDP; 6th July 2017 at 06:31 PM.
Jim_MDP is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:32 PM   #62
William Parcher
Show me the monkey!
 
William Parcher's Avatar
 
Join Date: Jul 2005
Posts: 18,003
Everybody dicks his own potatoes.
__________________
Bigfoot believers and Bigfoot skeptics are both plumb crazy. Each spends more than one minute per year thinking about Bigfoot.
William Parcher is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:33 PM   #63
Beelzebuddy
Philosopher
 
Beelzebuddy's Avatar
 
Join Date: Jun 2010
Posts: 5,639
If we assume "half my age" to be "half the age that is the answer to the question," the answer is to give you a wedgie, and then 10 or 11 depending on how badly you want a followup wedgie.
Beelzebuddy is online now   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:34 PM   #64
theprestige
Penultimate Amazing
 
Join Date: Aug 2007
Posts: 23,229
Originally Posted by Jim_MDP View Post
Don't care how old she is... the bitch stole $100 from a grocer, then spent it back at the same store. She claims no one lost out.

Did I mention she's a bit dim?*

(*she's interning at the White House this summer... doing IT with Baron I believe )


Here's an idea:

I'll take £20 from your wallet without telling you. Then I'll go for a drive in your car and give you the £20 I took, to pay for the petrol. You break even, right?

This signature is intended to irradiate people.
theprestige is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:37 PM   #65
Distracted1
Master Poster
 
Join Date: Dec 2007
Location: Philadelphia
Posts: 2,032
Originally Posted by Beelzebuddy View Post
If we assume "half my age" to be "half the age that is the answer to the question," the answer is to give you a wedgie, and then 10 or 11 depending on how badly you want a followup wedgie.
Tried that in post #26
__________________
The man with one watch knows what time it is, the man with two watches is never sure.
Distracted1 is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:42 PM   #66
Ampulla of Vater
Master Poster
 
Ampulla of Vater's Avatar
 
Join Date: Aug 2010
Location: North of the White Line of Toldt
Posts: 2,910
Maybe it's a different sister. Otherwise, it seems quite simple. I don't get all the hoopla.
Ampulla of Vater is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:42 PM   #67
theprestige
Penultimate Amazing
 
Join Date: Aug 2007
Posts: 23,229
Originally Posted by Distracted1 View Post
Tried that in post #26
That was an epic attempt, but the interpretation is semantically incoherent.

This signature is intended to irradiate people.
theprestige is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:45 PM   #68
Metullus
Forum ¾-Wit Pro Tem
 
Metullus's Avatar
 
Join Date: Jan 2005
Posts: 4,919
Are we to assume this is all in base 10?
__________________
I have met Tim at TAM. He is of sufficient height to piss on your leg. - Doubt 10/7/2005 - I'll miss Tim.

Aristotle taught that the brain exists merely to cool the blood and is not involved in the process of thinking. This is true only of certain persons. - Will Cuppy
Metullus is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:45 PM   #69
Elagabalus
Graduate Poster
 
Join Date: Dec 2013
Posts: 1,792
Originally Posted by theprestige View Post
That's not a math puzzle, that's math homework.

Not that the OP is much of a math puzzle itself. Either RBF sucks at basic algebra, or RBF sucks at reckoning age in the customary manner, or RBF is playing at far more silly buggers than they're ready to admit.

At this point their best option might be to *not* reveal the answer. Whatever it is, it won't live up to the hype or overcome the ill will.

I gotta figure that if 1700 people see and solve a simple math problem, then that is pretty much the correct answer. At that point anything else is effectively the hipster douchebag answer.

This signature is intended to irradiate people.
You know what's funny? I googled the question and the original form is this:

Quote:
When i was 4 years old my sister was half my age. Now i'm 100 years, How old is my sister?
Elagabalus is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:46 PM   #70
theprestige
Penultimate Amazing
 
Join Date: Aug 2007
Posts: 23,229
Originally Posted by Elagabalus View Post
You know what's funny? I googled the question and the original form is this:
50, obviously. But folks insist on answering 98.

It's like nobody in the world subscribes to RBF's version of reality.

This signature is intended to irradiate people.
theprestige is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:47 PM   #71
Jim_MDP
Philosopher
 
Jim_MDP's Avatar
 
Join Date: Sep 2002
Location: N.Cal/S.Or
Posts: 6,044
Originally Posted by Ampulla of Vater View Post
Maybe it's a different sister. Otherwise, it seems quite simple. I don't get all the hoopla.
I thought of that, hence my Kobiashi Maru comment.

I was thinking of the one... "... so how could the Doctor operate on their child if the patient had already lost his father?"
__________________
----------------------
Anything goes in the Goblin hut... anything.

"Suggesting spurious explanations isn't relevant to my work." -- WTC Dust.
"Both cannot be simultaneously true, and so one may conclude neither is true, and if neither is true, then Apollo is fraudulent." -- Patrick1000.
Jim_MDP is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:50 PM   #72
Red Baron Farms
Illuminator
 
Red Baron Farms's Avatar
 
Join Date: Apr 2013
Location: Oklahoma
Posts: 4,049
Originally Posted by RussDill View Post
We could consider half as old counted by days, leaving out leap day and counting by integer days. 4 years old is between 1460 days and 1824 days inclusive. That means the sister is between 730 days and 912 days inclusive.

You are between 1824-730=1094 days and 1460-912=548 days older than your sister. If your sister is 12 and just had her birthday, then you are at the minimum 13 (548 mod 365 = 1). If your sister's birthday is tomorrow, you are maximum 15 ((1094+364) mod 365 = 3). You could also be 14.

We could also consider half as old counted as integer years, again leaving out leap days and counting only integer days. Here you are 4 years old and your sister is 2 years old. So the max difference is you are 4 * 365 + 364 = 1824 and your sister is 2 * 365 = 730. So a difference of 1094 days. The min difference is you are 4 * 365 = 1460, your sister is 2 * 365 + 364 = 1094. So a difference of 366 days. This gives the same result as the above. Using the min difference on your sister's birthday makes you one year older. Using the max difference on the day before your sister's birthday makes you 3 years older.

BTW, if this is a pedantic thing about people born on leap year only having a birthday every 4 years, I swear...
Nope no leap year. Great work but you somehow still got the wrong answer?
__________________
Scott
"Permaculture is a philosophy of working with, rather than against nature; of protracted & thoughtful observation rather than protracted & thoughtless labour; & of looking at plants & animals in all their functions, rather than treating any area as a single-product system." Bill Mollison
Biome Carbon Cycle Management
Red Baron Farms is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:51 PM   #73
Skeptical Greg
Agave Wine Connoisseur
 
Skeptical Greg's Avatar
 
Join Date: Jul 2002
Posts: 14,791
Clearly, someone, including the OP, has a different understanding of what math is, than I do ...
__________________
" What if the Hokey Pokey is what it's all about? "

Prove your computer is not a wimp ! Join Team 13232 !
Skeptical Greg is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 06:57 PM   #74
ynot
Philosopher
 
ynot's Avatar
 
Join Date: Jan 2006
Posts: 7,065
Perhaps this thread belongs in the Conjurors Corner section given it’s a “trick question”?

Perhaps the “correct” answer is "rabbit", or "bunch of flowers"?
__________________
Rumours of a god’s existence have been greatly exaggerated.
ynot is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 07:03 PM   #75
Kid Eager
Philosopher
 
Kid Eager's Avatar
 
Join Date: Nov 2010
Posts: 6,253
Math question turned into a logic question? Whatever. 14, or 15 if you want to be a smartarse.
__________________
What do Narwhals, Magnets and Apollo 13 have in common? Think about it....
Kid Eager is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 07:18 PM   #76
DevilsAdvocate
Illuminator
 
DevilsAdvocate's Avatar
 
Join Date: Nov 2004
Posts: 4,697
Do you have more than one sister?

Otherwise I get 14.0082191780822 to 15.5068493150685 or 13.0109589041096 to 16.0082191780822 depending on whether by "half your age" you mean precisely half as many days old or you are rounding half to "years old" as you are so wont to do. Either way, you are far too old to be demanding such precise answers when you fail to use such precision yourself. Your sister was probably twice as smart as you when she was 4 years old!
__________________
Heaven forbid someone reads these words and claims to be adversely affected by them, thus ensuring a barrage of lawsuits filed under the guise of protecting the unknowing victims who were stupid enough to read this and believe it! - Kevin Trudeau

Last edited by DevilsAdvocate; 6th July 2017 at 07:19 PM.
DevilsAdvocate is online now   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 07:23 PM   #77
Red Baron Farms
Illuminator
 
Red Baron Farms's Avatar
 
Join Date: Apr 2013
Location: Oklahoma
Posts: 4,049
Originally Posted by Kid Eager View Post
Math question turned into a logic question? Whatever. 14, or 15 if you want to be a smartarse.


a person who is "4" is actually between "4" and "4 years+364 days" due to always rounding down.

So the sister will be between "2" and "2 years 182 days" younger, being half your age.

wait til sis becomes 12, then you are between 14 and 14 years +182 days. always rounding down means you are 14 either way. This is your minimum age because 12 years 0 days is your sister's minimum age.

But sis also has 364 days more before her next birthday. So depending when asked she could be up to 12 years 364 days, and the maximum you could be is 2 years 182 days older.

12 years 364 days + 2 years 182 days = 14 years 546 days = 15 years 181 days. Always rounding down means 15 years old is your maximum age.

QED
__________________
Scott
"Permaculture is a philosophy of working with, rather than against nature; of protracted & thoughtful observation rather than protracted & thoughtless labour; & of looking at plants & animals in all their functions, rather than treating any area as a single-product system." Bill Mollison
Biome Carbon Cycle Management

Last edited by Red Baron Farms; 6th July 2017 at 07:28 PM.
Red Baron Farms is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 07:25 PM   #78
Jim_MDP
Philosopher
 
Jim_MDP's Avatar
 
Join Date: Sep 2002
Location: N.Cal/S.Or
Posts: 6,044
Originally Posted by Kid Eager View Post
Math question turned into a logic question? Whatever. 14, or 15 if you want to be a smartarse.

You ever gonna answer your sig question?

I keep forgetting to ask.
__________________
----------------------
Anything goes in the Goblin hut... anything.

"Suggesting spurious explanations isn't relevant to my work." -- WTC Dust.
"Both cannot be simultaneously true, and so one may conclude neither is true, and if neither is true, then Apollo is fraudulent." -- Patrick1000.
Jim_MDP is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 07:25 PM   #79
Red Baron Farms
Illuminator
 
Red Baron Farms's Avatar
 
Join Date: Apr 2013
Location: Oklahoma
Posts: 4,049
Originally Posted by DevilsAdvocate View Post
Do you have more than one sister?

Otherwise I get 14.0082191780822 to 15.5068493150685 or 13.0109589041096 to 16.0082191780822 depending on whether by "half your age" you mean precisely half as many days old or you are rounding half to "years old" as you are so wont to do. Either way, you are far too old to be demanding such precise answers when you fail to use such precision yourself. Your sister was probably twice as smart as you when she was 4 years old!
Nope kid eager was right, 14 or 15......never 13 unless you cheat with leap years, black holes or other such nonsense, which I promised already wouldn't be part of the answer.
__________________
Scott
"Permaculture is a philosophy of working with, rather than against nature; of protracted & thoughtful observation rather than protracted & thoughtless labour; & of looking at plants & animals in all their functions, rather than treating any area as a single-product system." Bill Mollison
Biome Carbon Cycle Management

Last edited by Red Baron Farms; 6th July 2017 at 07:27 PM.
Red Baron Farms is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 6th July 2017, 07:26 PM   #80
William Parcher
Show me the monkey!
 
William Parcher's Avatar
 
Join Date: Jul 2005
Posts: 18,003
Originally Posted by William Parcher View Post
I hope that when the full explanation (the punchline) comes it's cool and educational. Please don't let it be a turd.
OMG it was a turd. We already knew that answer. It's not cool or educational.
__________________
Bigfoot believers and Bigfoot skeptics are both plumb crazy. Each spends more than one minute per year thinking about Bigfoot.
William Parcher is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Reply

International Skeptics Forum » General Topics » Science, Mathematics, Medicine, and Technology

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -7. The time now is 03:11 PM.
Powered by vBulletin. Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
© 2014, TribeTech AB. All Rights Reserved.
This forum began as part of the James Randi Education Foundation (JREF). However, the forum now exists as
an independent entity with no affiliation with or endorsement by the JREF, including the section in reference to "JREF" topics.

Disclaimer: Messages posted in the Forum are solely the opinion of their authors.