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Ultimate math trick question?

William Parcher said:
... or is your answer going to be something where people then argue that you aren't really right but rather are posing an opinion?
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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?* :rolleyes:

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


:D
 
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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.
 
Jim_MDP said:
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?* :rolleyes:

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


:D
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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 said:
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.
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You know what's funny? I googled the question and the original form is this:

When i was 4 years old my sister was half my age. Now i'm 100 years, How old is my sister?
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Ampulla of Vater said:
Maybe it's a different sister. Otherwise, it seems quite simple. I don't get all the hoopla.
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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?" :rolleyes:
 
RussDill said:
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...
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Nope no leap year. Great work but you somehow still got the wrong answer?:confused:
 
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"?
 
Math question turned into a logic question? Whatever. 14, or 15 if you want to be a smartarse.
 
Do you have more than one sister? :D

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! :D
 
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Kid Eager said:
Math question turned into a logic question? Whatever. 14, or 15 if you want to be a smartarse.
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:thumbsup::thumbsup::thumbsup::D

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. :thumbsup:

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
 
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DevilsAdvocate said:
Do you have more than one sister? :D

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! :D
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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.
 
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