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re: Solve this math problem

Posted on 9/5/17 at 12:30 pm to
Posted by Rhames
Member since Apr 2013
1159 posts
Posted on 9/5/17 at 12:30 pm to
Explain.

It's an operation in a sense that it is a fraction but the problem already establishes an actual division sign. Therefore 1/3 is actually .33333


Posted by LNCHBOX
70448
Member since Jun 2009
86903 posts
Posted on 9/5/17 at 12:31 pm to
You're wrong.
Posted by buckeye_vol
Member since Jul 2014
35359 posts
Posted on 9/5/17 at 12:33 pm to
quote:

It's an operation in a sense that it is a fraction but the problem already establishes an actual division sign. Therefore 1/3 is actually .33333
We can only determine it's (1/3) from the picture, which was provided 6 hours after the original problem. The way the OP has written the problem, even after showing the picture, would still result in 9.
Posted by Rhames
Member since Apr 2013
1159 posts
Posted on 9/5/17 at 12:33 pm to
So whats 3/(.33333)?
Posted by Korkstand
Member since Nov 2003
29002 posts
Posted on 9/5/17 at 12:33 pm to
quote:

Sure. But given that the OP's original answer was 7, then we couldn't even infer that it was a syntax issue.

I just took it that OP had multiple issues.

He thought that addition came before subtraction. Maybe PEMDAS should be PE(MD)(AS).
Posted by LZ83
La
Member since Sep 2016
17420 posts
Posted on 9/5/17 at 12:33 pm to
Damn this thread is still going on hahaha
Posted by lsupride87
Member since Dec 2007
104771 posts
Posted on 9/5/17 at 12:33 pm to
quote:

It's an operation in a sense that it is a fraction but the problem already establishes an actual division sign. Therefore 1/3 is actually .33333
1/3 is 1 divided by 3. In this problem however, without (), the 3 divided by 1 comes first
Posted by LNCHBOX
70448
Member since Jun 2009
86903 posts
Posted on 9/5/17 at 12:34 pm to
9. But that's not the same thing.
Posted by Rhames
Member since Apr 2013
1159 posts
Posted on 9/5/17 at 12:34 pm to
quote:



We can only determine it's (1/3) from the picture, which was provided 6 hours after the original problem. The way the OP has written the problem, even after showing the picture, would still result in 9.



Ok but it's still one haha
Posted by Rhames
Member since Apr 2013
1159 posts
Posted on 9/5/17 at 12:35 pm to
quote:


Posted on 9/5/17 at 12:33 pm to Rhames

quote:
It's an operation in a sense that it is a fraction but the problem already establishes an actual division sign. Therefore 1/3 is actually .33333

1/3 is 1 divided by 3. In this problem however, without (), the 3 divided by 1 comes firs





You can't have 2 different division signs. 1/3 =.3333 in the problem.
Posted by buckeye_vol
Member since Jul 2014
35359 posts
Posted on 9/5/17 at 12:36 pm to
quote:

Ok but it's still one haha
No. This:
quote:

9-3÷1/3+1=
Is 9.

This:
quote:

9-3÷(1/3)+1=
Is 1.
This post was edited on 9/5/17 at 12:36 pm
Posted by lsupride87
Member since Dec 2007
104771 posts
Posted on 9/5/17 at 12:38 pm to
quote:




You can't have 2 different division signs. 1/3 =.3333 in the problem.
Posted by slackster
Houston
Member since Mar 2009
90035 posts
Posted on 9/5/17 at 12:51 pm to
quote:

The problem is set up in a way to be intentionally ambiguous. All of these viral math problems are set up like this. It is not in any way a test of math skill or understanding. It is a test of arbitrary math notation that in no way tests understanding of mathematical function. Saying otherwise is just trying to find a way to assert superiority in a very pathetic way. But what else is there to expect from here.


Signed,

People who get the wrong answer.
Posted by Placebeaux
Bobby Fischer Fan Club President
Member since Jun 2008
51852 posts
Posted on 9/5/17 at 12:57 pm to
quote:

We can only determine it's (1/3) from the picture, which was provided 6 hours after the original problem. The way the OP has written the problem, even after showing the picture, would still result in 9.


You can find comfort in knowing the 40% of Japanese 20 year olds got it wrong as well.
Posted by lsupride87
Member since Dec 2007
104771 posts
Posted on 9/5/17 at 12:59 pm to
quote:

You can find comfort in knowing the 40% of Japanese 20 year olds got it wrong as well.
If they said 9 to your written problem, they were actually correct
Posted by Placebeaux
Bobby Fischer Fan Club President
Member since Jun 2008
51852 posts
Posted on 9/5/17 at 1:00 pm to
quote:

No. This:

quote:
9-3÷1/3+1=

Is 9.

This:

quote:
9-3÷(1/3)+1=

Is 1.


The most common mistake is writing the 1/3 as:

9 – 3 ÷ 1/3 + 1

Most calculators will not group the 1/3, so the calculator evaluates:

9 – 3/1/3 + 1
= 9 – 3/3 + 1
= 9 – 1 + 1
= 9

The correct answer is found by grouping 1/3 with parentheses and following the order of operations, with division taking precedence.

9 – 3 ÷ (1/3) + 1
= 9 – 9 + 1
= 0 + 1
= 1

The correct answer is 1.

My question is why you nerds using a calculator?
Posted by lsupride87
Member since Dec 2007
104771 posts
Posted on 9/5/17 at 1:00 pm to
quote:

The most common mistake is writing the 1/3 as:

9 – 3 ÷ 1/3 + 1

Most calculators will not group the 1/3, so the calculator evaluates:

9 – 3/1/3 + 1
= 9 – 3/3 + 1
= 9 – 1 + 1
= 9
Because the calculator is right and doesnt change the problem
Posted by lsupride87
Member since Dec 2007
104771 posts
Posted on 9/5/17 at 1:02 pm to
quote:

The correct answer is found by grouping 1/3 with parentheses
So you change the problem, got it


What color is the sky?

Computers incorrectly groups the question as , "what color is the sky, and gives the answer blue.

To find the answer, you must first correctly change the question to what color is grass. Then, you get the correct answer of green

Posted by Korkstand
Member since Nov 2003
29002 posts
Posted on 9/5/17 at 1:06 pm to
quote:

quote:

The correct answer is found by grouping 1/3 with parentheses
So you change the problem, got it
Again, when transcribing the original problem onto this message board, parentheses must be added in order to avoid changing the problem.
Posted by buckeye_vol
Member since Jul 2014
35359 posts
Posted on 9/5/17 at 1:06 pm to
quote:

Most calculators will not group the 1/3, so the calculator evaluates:
It's not just an issue specific to calculators; it's a broader issue of syntax the requires specific logical operators for everything (e.g., ^ for exponent), which is the case in operations written on here.
quote:

The correct answer is found by grouping 1/3 with parentheses and following the order of operations, with division taking precedence.
Which you did not do.
quote:

My question is why you nerds using a calculator?
One doesn't need to calculator to evaluate an expression that requires the same syntax as a calculator.

In other words, you wrote the problem incorrectly.
This post was edited on 9/5/17 at 1:11 pm
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