a sunday problem, just for something to do.. - Page 2 - DiscussWorldIssues - Socio-Economic Religion and Political Uncensored Debate

**secondmortgages** · 10-05-2011, 02:45 AM

I think you need to go back to school.

You mean whoever programmed the calculator's logic

- I entered it exactly as written.

**pupyississido** · 10-05-2011, 02:46 AM

You mean whoever programmed the calculator's logic - I entered it exactly as written.

You probably entered it wrong.

**9mm_fan** · 10-05-2011, 02:49 AM

Calculator gives 0.861111111...

ORDER OF OPERATIONS.

**secondmortgages** · 10-05-2011, 02:51 AM

You probably entered it wrong.

Nope - get your own and see what result you get?

What is the accepted order anyway*? Within brackets, multiplication then division - that's what the calculator did?

Must be pushing forty years

since I did that at school, EaG.

**JeremyBalll** · 10-05-2011, 02:51 AM

The answer is alcohol and other fun substances.

**engacenus** · 10-05-2011, 02:54 AM

You probably entered it wrong.

Both VPAM and DAL calculators return 0.8611111 if the implicit operator isn't included after the 4.

**Gaxiciverfere** · 10-05-2011, 03:05 AM

Thank Christ i'm thick, I just glaze over whenever maths is mentioned, the subject scares me to death.

**pupyississido** · 10-05-2011, 03:05 AM

Both VPAM and DAL calculators return 0.8611111 if the implicit operator isn't included after the 4.

Edit: I've changed my mind again. I think I was correct the first time.

I haven't done any of this since I left school years ago!

**Chooriwrocaey** · 10-05-2011, 03:13 AM

279......

**secondmortgages** · 10-05-2011, 03:30 AM

Both VPAM and DAL calculators return 0.8611111 if the implicit operator isn't included after the 4.

That makes sense, without it, 0.861111111, with it, 279 - which is what the mental arithmetic got - so much for using a calculator to check my work

**infollafago** · 10-05-2011, 03:36 AM

I tried entering it into my ti89 and could get 3 different answers but surprisingly it got 279 when entered exactly as it was written.

I don't much care for reverse polish notation, so DAL is fine for me as long as I have a CAS.

I suppose it would be parenthesis first: 62/4(18)
Then left to right division: 15.5(18)
Finally multiply: 279
Yay order of operations ambiguity...

**engacenus** · 10-05-2011, 04:14 AM

Edit: I've changed my mind again. I think I was correct the first time.

I haven't done any of this since I left school years ago!

I was just supporting that the calculator gave the answer that Gordo said.

**pupyississido** · 10-05-2011, 04:17 AM

I was just supporting that the calculator gave the answer that Gordo said.

I tried it on a calculator and it gave the correct answer....if you input the equations in the correct sequence.

Edit: This was the standard Windows Calculator. I do have a scientific calculator, but I'll be damned if can remember how to use its higher functions. But Gordo didn't specify what type he was using.

**secondmortgages** · 10-05-2011, 04:33 AM

I tried it on a calculator and it gave the correct answer....if you input the equations in the correct sequence.

Edit: This was the standard Windows Calculator. I do have a scientific calculator, but I'll be damned if can remember how to use its higher functions. But Gordo didn't specify what type he was using.

Casio fx-100MS, a cheap replacement.

**putza** · 10-05-2011, 05:09 AM

Gordo's first answer was right. I just got out of an algebra class and order of operations says Please Excuse My Dear Aunt Sally...
P - parentheses
E - exponents
M - multiplication
D - division
A - addition
S - subtraction

Therefore, the problem would be solved as
(12 + 6) = 18
4 * 18 = 72
62 / 72 = 0.86111111111

**hexniks** · 10-05-2011, 05:17 AM

Gordo's first answer was right. I just got out of an algebra class and order of operations says Please Excuse My Dear Aunt Sally...
P - parentheses
E - exponents
M - multiplication
D - division
A - addition
S - subtraction

Therefore, the problem would be solved as
(12 + 6) = 18
4 * 18 = 72
62 / 72 = 0.86111111111

That's not true, Multiplication and division (just as addition + subtraction) are of equal rank and are solved from left to right.

62÷4(12+6)
62÷4*18
15.5*18
279

**9mm_fan** · 10-05-2011, 05:21 AM

Gordo's first answer was right. I just got out of an algebra class and order of operations says Please Excuse My Dear Aunt Sally...
P - parentheses
E - exponents
M - multiplication
D - division
A - addition
S - subtraction

Therefore, the problem would be solved as
(12 + 6) = 18
4 * 18 = 72
62 / 72 = 0.86111111111

Haha, what? Just got out of Algebra? How old are you?

**MatueHarton** · 10-05-2011, 05:43 AM

I understand both way of working it out, but I don't know which is correct. First time I got 0.86111. But then I realise the 62 should be divided by 4 before 18 is multiplied by 4.

**hexniks** · 10-05-2011, 06:09 AM

I understand both way of working it out, but I don't know which is correct. First time I got 0.86111. But then I realise the 62 should be divided by 4 before 18 is multiplied by 4.

Divisions and multiplications are the same rank, go from left to right, it's very simple.

**22paseabelldaps** · 10-05-2011, 06:22 AM

Done and done.

http://www.google.com/search?source=...&aqi=&aql=&oq=

10-05-2011, 02:45 AM	#21
secondmortgages Join Date Oct 2005 Posts 455 Senior Member	I think you need to go back to school. You mean whoever programmed the calculator's logic - I entered it exactly as written. Share Share this post on Digg Del.icio.us Technorati Twitter
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10-05-2011, 02:46 AM	#22
pupyississido Join Date Oct 2005 Posts 598 Senior Member	You mean whoever programmed the calculator's logic - I entered it exactly as written. You probably entered it wrong. Share Share this post on Digg Del.icio.us Technorati Twitter
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10-05-2011, 02:49 AM	#23
9mm_fan Join Date May 2007 Age 54 Posts 5,191 Senior Member	Calculator gives 0.861111111... ORDER OF OPERATIONS. Share Share this post on Digg Del.icio.us Technorati Twitter
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10-05-2011, 02:51 AM	#24
secondmortgages Join Date Oct 2005 Posts 455 Senior Member	You probably entered it wrong. Nope - get your own and see what result you get? What is the accepted order anyway*? Within brackets, multiplication then division - that's what the calculator did? Must be pushing forty years since I did that at school, EaG. Share Share this post on Digg Del.icio.us Technorati Twitter
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10-05-2011, 02:51 AM	#25
JeremyBalll Join Date Oct 2005 Posts 499 Senior Member	The answer is alcohol and other fun substances. Share Share this post on Digg Del.icio.us Technorati Twitter
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10-05-2011, 02:54 AM	#26
engacenus Join Date Oct 2005 Posts 494 Senior Member	You probably entered it wrong. Both VPAM and DAL calculators return 0.8611111 if the implicit operator isn't included after the 4. Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 03:05 AM	#27
Gaxiciverfere Join Date Oct 2005 Posts 479 Senior Member	Thank Christ i'm thick, I just glaze over whenever maths is mentioned, the subject scares me to death. Share Share this post on Digg Del.icio.us Technorati Twitter
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10-05-2011, 03:13 AM	#29
Chooriwrocaey Join Date Oct 2005 Posts 463 Senior Member	279...... Share Share this post on Digg Del.icio.us Technorati Twitter
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10-05-2011, 03:30 AM	#30
secondmortgages Join Date Oct 2005 Posts 455 Senior Member	Both VPAM and DAL calculators return 0.8611111 if the implicit operator isn't included after the 4. That makes sense, without it, 0.861111111, with it, 279 - which is what the mental arithmetic got - so much for using a calculator to check my work Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 03:36 AM	#31
infollafago Join Date Oct 2005 Posts 454 Senior Member	I tried entering it into my ti89 and could get 3 different answers but surprisingly it got 279 when entered exactly as it was written. I don't much care for reverse polish notation, so DAL is fine for me as long as I have a CAS. I suppose it would be parenthesis first: 62/4(18) Then left to right division: 15.5(18) Finally multiply: 279 Yay order of operations ambiguity... Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 04:14 AM	#32
engacenus Join Date Oct 2005 Posts 494 Senior Member	Edit: I've changed my mind again. I think I was correct the first time. I haven't done any of this since I left school years ago! I was just supporting that the calculator gave the answer that Gordo said. Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 04:17 AM	#33
pupyississido Join Date Oct 2005 Posts 598 Senior Member	I was just supporting that the calculator gave the answer that Gordo said. I tried it on a calculator and it gave the correct answer....if you input the equations in the correct sequence. Edit: This was the standard Windows Calculator. I do have a scientific calculator, but I'll be damned if can remember how to use its higher functions. But Gordo didn't specify what type he was using. Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 04:33 AM	#34
secondmortgages Join Date Oct 2005 Posts 455 Senior Member	I tried it on a calculator and it gave the correct answer....if you input the equations in the correct sequence. Edit: This was the standard Windows Calculator. I do have a scientific calculator, but I'll be damned if can remember how to use its higher functions. But Gordo didn't specify what type he was using. Casio fx-100MS, a cheap replacement. Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 05:09 AM	#35
putza Join Date Oct 2005 Posts 383 Senior Member	Gordo's first answer was right. I just got out of an algebra class and order of operations says Please Excuse My Dear Aunt Sally... P - parentheses E - exponents M - multiplication D - division A - addition S - subtraction Therefore, the problem would be solved as (12 + 6) = 18 4 * 18 = 72 62 / 72 = 0.86111111111 Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 05:17 AM	#36
hexniks Join Date Oct 2005 Posts 581 Senior Member	Gordo's first answer was right. I just got out of an algebra class and order of operations says Please Excuse My Dear Aunt Sally... P - parentheses E - exponents M - multiplication D - division A - addition S - subtraction Therefore, the problem would be solved as (12 + 6) = 18 4 * 18 = 72 62 / 72 = 0.86111111111 That's not true, Multiplication and division (just as addition + subtraction) are of equal rank and are solved from left to right. 62÷4(12+6) 62÷418 15.518 279 Share Share this post on Digg Del.icio.us Technorati Twitter
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10-05-2011, 05:21 AM	#37
9mm_fan Join Date May 2007 Age 54 Posts 5,191 Senior Member	Gordo's first answer was right. I just got out of an algebra class and order of operations says Please Excuse My Dear Aunt Sally... P - parentheses E - exponents M - multiplication D - division A - addition S - subtraction Therefore, the problem would be solved as (12 + 6) = 18 4 * 18 = 72 62 / 72 = 0.86111111111 Haha, what? Just got out of Algebra? How old are you? Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 05:43 AM	#38
MatueHarton Join Date Oct 2005 Posts 546 Senior Member	I understand both way of working it out, but I don't know which is correct. First time I got 0.86111. But then I realise the 62 should be divided by 4 before 18 is multiplied by 4. Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 06:09 AM	#39
hexniks Join Date Oct 2005 Posts 581 Senior Member	I understand both way of working it out, but I don't know which is correct. First time I got 0.86111. But then I realise the 62 should be divided by 4 before 18 is multiplied by 4. Divisions and multiplications are the same rank, go from left to right, it's very simple. Share Share this post on Digg Del.icio.us Technorati Twitter
	Quote

10-05-2011, 06:22 AM	#40
22paseabelldaps Join Date Oct 2005 Posts 438 Senior Member	Done and done. http://www.google.com/search?source=...&aqi=&aql=&oq= Share Share this post on Digg Del.icio.us Technorati Twitter
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