Unsolvable Question 6/2(1+2)= ?

It’s actually

6
– (2+1)
2

if that makes more sense.

[quote]Gaius Octavius wrote:
A)My mistake. Sorry about that.
B)No, there can be as many meanings as we want it to have. If I define “/” to be the integral symbol then this sure as hell ain’t 9, it won’t even be a number. The two meanings that make a lick of sense however are that “/” is either a simple divisor or that it means that whatever follows is in a 2nd line.[/quote]

THat problem is this sites fault it won’t let me do the divide by sign, does some strange language !

[quote]John S. wrote:
just broke out my old Algebra book, it is definitely 9. Thats what I get for over thinking a problem.

Lesson learned don’t over think math.[/quote]

Can you write out the logic please :slight_smile:

" The general consensus among math people is that “multiplication by juxtaposition” (that is, multiplying by just putting things next to each other, rather than using the “Ã??” sign) indicates that the juxtaposed values must be multiplied together before processing other operations."

So, I vote for “1”.

[quote]Gaius Octavius wrote:
I’m referring to “/”. If it means that what follows is in a 2nd line, the answer is 1. If not it’s 9.[/quote]

I guess if we’re making up definitions for symbols, we can make it anything we want. But for every engineer, statistician, mathematician, guy-in-the-corner-using-mathematica who uses a computer, ‘/’ means ‘divide the one preceding expression by the one following expression.’

[quote]Axel44 wrote:
" The general consensus among math people is that “multiplication by juxtaposition” (that is, multiplying by just putting things next to each other, rather than using the “Ã???” sign) indicates that the juxtaposed values must be multiplied together before processing other operations."

So, I vote for “1”.[/quote]

lol. Thanks to the delegate from Mathdom.

[quote]johnnytang24 wrote:

[quote]Gaius Octavius wrote:
I’m referring to “/”. If it means that what follows is in a 2nd line, the answer is 1. If not it’s 9.[/quote]

I guess if we’re making up definitions for symbols, we can make it anything we want. But for every engineer, statistician, mathematician, guy-in-the-corner-using-mathematica who uses a computer, ‘/’ means ‘divide the one preceding expression by the one following expression.’[/quote]

So your answer is 1 or 9

:smiley:

Need to tally up figures here !

What’s 1+1?

Wrong. In my world, ‘+’ means ‘subtract.’ The answer is 0.

[quote]Voluminous wrote:

[quote]John S. wrote:
just broke out my old Algebra book, it is definitely 9. Thats what I get for over thinking a problem.

Lesson learned don’t over think math.[/quote]

Can you write out the logic please :)[/quote]

6/2(1+2)
(1+2)=3

6/2=3
3(3)=9

I seem to remember being taught that you have to multiply 2(3) hence why I got 6/6 but I may have been mistaken.

Edit* I was mistaken I don’t kno why I keep reverting back to thinking I multiply 2(3) first.

I love Maths !

:slight_smile:

[quote]Axel44 wrote:
" The general consensus among math people is that “multiplication by juxtaposition” (that is, multiplying by just putting things next to each other, rather than using the “Ã???” sign) indicates that the juxtaposed values must be multiplied together before processing other operations."

So, I vote for “1”.[/quote]

That’s typically the logic applied to variables, eg a/bx; when the numbers are as such in the given expression on this thread, you just follow standard operations like a computer would.

It’s over 9000…

[quote]Voluminous wrote:

[quote]John S. wrote:

[quote]byukid wrote:

it’s 9[/quote]

Your right, now that I am looking at the problem like that it makes sense.[/quote]

But how does 6/2(1+2) get assigned to division being done before multiplication. And you going left to right.

(Devils Advocate)

[/quote]

Because the command for division comes before the command for multiplication* edited.

Parenthesis is done first. the 2 is OUTSIDE the parenthesis. It doesnt get included in the “parenthsis is done first”.

(1+2)

equals 3. Parenthesis done.

Now start from the left and do the next thing in the order of operations. Division or multiplication, whichever comes first. Why on earth would you start with the command CLOSER to the = sign (the multiplcation command).

So the next thing to do is division. 6 divided by 2. Equals 3.

Now youre left with 3 x (3)

9

The only way you get another answer is if you dont read left to right.

I thought you could do the dustributive as part of or even before the parentheses.

And what happened to the stereotype of big dumb weightlifters?

[quote]johnnytang24 wrote:
What’s 1+1?

Wrong. In my world, ‘+’ means ‘subtract.’ The answer is 0.[/quote]

Stop being a chump. “/” meaning a line break would be a perfectly valid and normal definition to use.

[quote]Mad HORSE wrote:
I thought you could do the dustributive as part of or even before the parentheses.

And what happened to the stereotype of big dumb weightlifters?[/quote]

PEMDAS

parenthesis is first.

[quote]Gaius Octavius wrote:
I repeat, it depends on how you read the dash. There is no right or wrong in this matter, it’s just a matter of convention.[/quote]

you forgot to add that only HIGHLY INEXPERIENCED problem-solvers wouldn’t tend to see everything after the dash as the denominator of the entire expression

if you get 9 - that would be you

if you get 1 - your approach mirrors that of the experts

I’m sticking with B.O.D.M A.S. left to right = 9.

Now I’m taking my calculator and going home!

runs off crying

Is it 6/2(1+2) or 6/(2(1+2))? There is only one answer either way. The only problem here is ambiguity.

Alright, well now that we solved this, how about some quantum physics problems next?