Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2017-02-26 01:07:14

Mathegocart
Member
Registered: 2012-04-29
Posts: 2,226

Harry Potter and the Age of Man

Hello my fellow beneficiaries... I'd like to confirm my solution to this problem
The best estimate for the age of the Earth put it at 4.54 billion years. Modern humans have been here for 100,000 years. Harry Potter and the Deathly Hallows has 784 pages, and each page has 19 sentences. If the Earth's existence, all 4.54 billion years of it, were on a 784 page book with 19 sentences per page, on what sentence and page would humans appear on?
Through a proportion:


we obtain that humans appeared on the 14,895th sentence and the 783rd page.
Correct?


The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.

Offline

#2 2017-02-26 07:08:01

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Harry Potter and the Age of Man

Each sentence is worth 304780 years. How do you answer now?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#3 2017-02-26 09:32:08

Mathegocart
Member
Registered: 2012-04-29
Posts: 2,226

Re: Harry Potter and the Age of Man

Humans appear on year 4,539,900,000, so (4,539,900,000)/(304,780) = 14895.662445    i.e, the 14,895th sentence


The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.

Offline

#4 2017-02-26 09:36:20

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Harry Potter and the Age of Man

Hi;

Just asking, why would you not round up and say they appear in the 14,896 sentence?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#5 2017-02-26 09:37:32

Mathegocart
Member
Registered: 2012-04-29
Posts: 2,226

Re: Harry Potter and the Age of Man

nvm, I see why

Last edited by Mathegocart (2017-02-26 09:50:16)


The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.

Offline

#6 2017-02-26 09:47:22

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Harry Potter and the Age of Man

Supposing your answer was .6754 sentences? Would you say it was in the first sentence?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#7 2017-02-26 09:50:59

Mathegocart
Member
Registered: 2012-04-29
Posts: 2,226

Re: Harry Potter and the Age of Man

I would, I've seen the mistake committed in here.


The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.

Offline

#8 2017-02-26 09:51:43

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Harry Potter and the Age of Man

Okay, so what do you like as an answer now to the original problem?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

#9 2017-02-26 10:25:43

Mathegocart
Member
Registered: 2012-04-29
Posts: 2,226

Re: Harry Potter and the Age of Man

Humans are within 67% in sentence 14,896.


The integral of hope is reality.
May bobbym have a wonderful time in the pearly gates of heaven.
He will be sorely missed.

Offline

#10 2017-02-26 10:29:46

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Harry Potter and the Age of Man

That is what I would go with, the last sentence. But I always get these type wrong.

I would say humans are in the last 1 / 3 (roughly) part of the last sentence.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Offline

Board footer

Powered by FluxBB