Music Banter

Music Banter (https://www.musicbanter.com/)
-   Games, Lists, Jokes and Polls (https://www.musicbanter.com/games-lists-jokes-polls/)
-   -   6/2*(1+2)=? (https://www.musicbanter.com/games-lists-jokes-polls/56077-6-2-1-2-a.html)

MoonlitSunshine 04-29-2011 02:09 PM

Quote:

Originally Posted by storymilo (Post 1045328)
The answer is definitely nine. You can't just move parentheses about... they're in the equation for a reason.

I see you really read my post there. At no point did I say you could just move the parentheses around. The answer is ambiguous. The only way you can "solve" it is by using a convention, of which there are multiple, which this thread is clearly proving.

[MERIT] 04-29-2011 02:11 PM

Quote:

Originally Posted by storymilo (Post 1045344)
I guess I'll stick to my way and you to yours? I've always been taught that multiplication does not take precedence over division. In fact I'm still being taught that. That link of yours is the only source I've ever seen that says otherwise, but maybe things are just different in other places.

And I have always been taught the exact opposite. With multiplication taking precedence over division, and addition over subtraction. From grade school through high school, and even through my Calculus I,II, III and Differential Equations math courses at my University. It's astounding that something as finite as mathematic could be interpreted differently by different people.

MoonlitSunshine 04-29-2011 02:12 PM

...because the equation is ambiguous. I've been saying this for four pages :P

Burning Down 04-29-2011 02:12 PM

Quote:

Originally Posted by storymilo (Post 1045344)
I guess I'll stick to my way and you to yours? I've always been taught that multiplication does not take precedence over division. In fact I'm still being taught that. That link of yours is the only source I've ever seen that says otherwise, but maybe things are just different in other places.

edit: Nine is also the answer that comes up when I put the equation into my calculator.

Same here, and I have a graphing calculator that cost me over $150. I'm hoping it's not spitting out crap.

[MERIT] 04-29-2011 02:13 PM

When I plug it into both my Texas Instruments and Casio scientific calculators (the entire equation as it is written, not part by part) they both give me the same answer: 1.

storymilo 04-29-2011 02:14 PM

Quote:

Originally Posted by oojay (Post 1045347)
And I have always been taught the exact opposite. With multiplication taking precedence over division, and addition over subtraction. From grade school through high school, and even through my Calculus I,II, III and Differential Equations math courses at my University. It's astounding that something as finite as mathematic could be interpreted differently by different people.

Yeah, I always assumed it was the same everywhere. This thread has been an eye-opener.

Burning Down 04-29-2011 02:21 PM

Quote:

Originally Posted by oojay (Post 1045347)
And I have always been taught the exact opposite. With multiplication taking precedence over division, and addition over subtraction. From grade school through high school, and even through my Calculus I,II, III and Differential Equations math courses at my University. It's astounding that something as finite as mathematic could be interpreted differently by different people.

That's interesting. I was almost certain that most math was taught the same way in the US and Canada, because our educational curricula are almost the same. Maybe it varies from state to state?

I've only been out of high school for ~3 years, so everything that I've learned is still pretty fresh in my little brain.

Quote:

Originally Posted by storymilo
Yeah, I always assumed it was the same everywhere. This thread has been an eye-opener.

It really has. Perhaps I will learn more about different math formulas, etc, when I get to teacher's college.

storymilo 04-29-2011 02:21 PM

Quote:

Originally Posted by Burning Down (Post 1045349)
Same here, and I have a graphing calculator that cost me over $150. I'm hoping it's not spitting out crap.

Quote:

Originally Posted by oojay (Post 1045350)
When I plug it into both my Texas Instruments and Casio scientific calculators (the entire equation as it is written, not part by part) they both give me the same answer: 1.

I have a Texas Instruments too (a graphing one) and it gave me nine. Even our calculators are different...

Quote:

Originally Posted by MoonlitSunshine (Post 1045348)
...because the equation is ambiguous. I've been saying this for four pages :P

I suppose if you were to look at the equation with all different orders in mind, it would be ambiguous. When you pick just one, it has a clearly defined answer. As it's presented, without any extra parentheses, the only way to solve it is to use an order of operations. So that's what I did.

storymilo 04-29-2011 02:23 PM

Quote:

Originally Posted by Burning Down (Post 1045353)
That's interesting. I was almost certain that most math was taught the same way in the US and Canada, because our educational curricula are almost the same. Maybe it varies from state to state?

I've only been out of high school for ~3 years, so everything that I've learned is still pretty fresh in my little brain.

It would seem it varies from state to state, as oojay is in Missouri and I'm in Connecticut.

MoonlitSunshine 04-29-2011 02:27 PM

Quote:

Originally Posted by storymilo (Post 1045354)
I have a Texas Instruments too (a graphing one) and it gave me nine. Even our calculators are different...



I suppose if you were to look at the equation with all different orders in mind, it would be ambiguous. When you pick just one, it has a clearly defined answer. As it's presented, without any extra parentheses, the only way to solve it is to use an order of operations. So that's what I did.

"pick one" is not a solution. If you have a equation x + y = 5, you can't just "pick a y" and then assume your answer for x is correct. You need more information, namely a value for y, or in the case of this thread, extra parentheses to define whether the * or the / should be done first.


All times are GMT -6. The time now is 12:44 PM.


© 2003-2025 Advameg, Inc.