What is 6+2x10 ? - Page 5

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VernonDozier 2,218 Posting Expert Featured Poster · Answer 1 · 2011-12-29T01:36:11+00:00

Is there really anything left to say? The rule is the rule. There is no debate. It's not a matter of opinion. There is a right answer and a wrong answer. Parentheses first, then exponents, then multiplication and division at equal precedence, which means you go left to right in that case, then finally addition and subtraction, which is also of equal precedence so you go left to right. This is the method to use if you always want to get the right answer. All of these acronyms are interesting and somewhat helpful, but they all fall flat with these equal precedence / left to right problems so if you try to use only the acronym, you're going to be in trouble.

What's better? PEDMAS or PEMDAS? They're equally good / right and equally bad / wrong since M and D both have equal precedence. Which one should you use? Neither, but if you want to use one, flip a coin. They'll both work equally well and fail entirely under the right circumstances.

5 x 5 / 5 --> right under PEMDAS, wrong under PEDMAS
5 / 5 x 5 --> right under PEDMAS, wrong under PEMDAS

EarlSarsuelo 0 Newbie Poster · Answer 2 · 2011-12-29T08:12:17+00:00

Your all very right. I wanted to see what people will react like. I new there would be a bunch (most likely a majority) of programmers and/or math acquainted people here - But still, its possible. People generally do not think of that as that's not how they're taught to think when they're young. PEMDAS, same thing as BIMDAS and BOMDAS; thus, I DO memorise it. Why is it a great job? Well you all got it right the first time, unless your hiding the fact you didn't :D

By MDAS principle...it is equal to 26.

Azmah 1 Junior Poster · Answer 3 · 2011-12-29T10:26:53+00:00

@ VernonDozier

I do understand that. It really comes down to the scenario you are currently in, the problem you are facing.

@ EarlSarsuelo

Very true, good on ya ;)

ADRIANEra -15 Junior Poster in Training · Answer 4 · 2011-12-29T12:36:21+00:00

ADRIANEra -15 Junior Poster in Training

12 Years Ago

26 is the answer

Ancient Dragon 5,243 Achieved Level 70 Team Colleague Featured Poster · Answer 5 · 2011-12-29T19:01:12+00:00

mdas and dmas. So now we can happily interchange between division first, then multiplication first? I don't think so.
What's your say?

(10*2)/5 = 4
10*(2/5) = 10 * 6.6 = 60.6

diafol · Answer 6 · 2011-12-30T06:40:53+00:00

(10*2)/5 = 4
10*(2/5) = 10 * 6.6 = 60.6

I get both to be 4

Last one: 10*(2/5) = 10*0.4 = 4

Or am I missing something?

TrustyTony 888 pyMod Team Colleague Featured Poster · Answer 7 · 2011-12-31T07:10:05+00:00

Better example of not interchangebility of division and multiplication a/(b*c) = a/b/c /= a/b*c

skilly 23 Posting Whiz in Training · Answer 8 · 2011-12-31T12:24:44+00:00

Now I just happen to be drunk as hell. i forgort how ..what is 1 million divided by ten divided by ten dividided by like ten times. who cares? just do it .. rate me down when you don't understand, but make sure to never rate me up when i actually do decided like i can help,,squash this thread.. it has been pointlessly disected. way beyond necessary

lxXTaCoXxl 26 Posting Whiz in Training · Answer 9 · 2012-01-02T01:38:42+00:00

The problem your friend had is the normal problem with people. All throughout school we are taught to read left to right correct? So int turn, even in math we begin reading left to right out of habit. Sometimes you have the people that try to solve problems as they read them (not always the best method of doing something) and with math can almost always produce the wrong answer. The trick is to take your time and examine the problem before trying to solve it and some where along the way people forget that. Slow down and think, even if it is just 6 + 2 * 10. :)

BDove 0 Newbie Poster · Answer 10 · 2012-01-02T20:10:34+00:00

Eh!? :confused: I think its 26, but now you have made me doubt of my mathematical way of thinking.

Also, I don't understand what this BIMDAS stuff is, but it sounds to me that its like a Mathematical Fallacy. Like the "All numbers are equal" in which one divides by 0 to prove it. I fell for it before noticing I was dividing by 0.

dovakhiin 0 Newbie Poster · Answer 11 · 2012-01-03T00:48:54+00:00

Eh!? :confused: I think its 26, but now you have made me doubt of my mathematical way of thinking.
Also, I don't understand what this BIMDAS stuff is, but it sounds to me that its like a Mathematical Fallacy. Like the "All numbers are equal" in which one divides by 0 to prove it. I fell for it before noticing I was dividing by 0.

What has this got to do with division by zero or a mathematical fallacy? BIMDAS also known as BEMDAS is a rule of precedence that's it. I wonder why this thread is so huge..:-O

BDove 0 Newbie Poster · Answer 12 · 2012-01-03T07:00:28+00:00

What has this got to do with division by zero or a mathematical fallacy? BIMDAS also known as BEMDAS is a rule of precedence that's it. I wonder why this thread is so huge..:-O

Nothing. I should have googled "BIMDAS" before posting. XD

Azmah 1 Junior Poster · Answer 13 · 2012-01-03T10:02:34+00:00

Thanks for assisting in proving my point, Ancient Dragon :D

(10*2)/5 = 4
10*(2/5) = 10 * 6.6 = 60.6

Azmah 1 Junior Poster · Answer 14 · 2012-01-03T10:05:16+00:00

Maths is so manipulatable <-- if this is a word :P which it is not but now is :)

Better example of not interchangebility of division and multiplication a/(b*c) = a/b/c /= a/b*c

Azmah 1 Junior Poster · Answer 15 · 2012-01-03T10:07:53+00:00

We enjoy doing it. It can help further strengthen one's mathematics in ways unimaginable! Seems simple and silly, but it's all in the subconscious my friend :)
Do you get me?

Now I just happen to be drunk as hell. i forgort how ..what is 1 million divided by ten divided by ten dividided by like ten times. who cares? just do it .. rate me down when you don't understand, but make sure to never rate me up when i actually do decided like i can help,,squash this thread.. it has been pointlessly disected. way beyond necessary

Azmah 1 Junior Poster · Answer 16 · 2012-01-03T10:12:52+00:00

Your absolutely right! Thanks for supporting me, IxXTaCoXxl :)

The problem your friend had is the normal problem with people. All throughout school we are taught to read left to right correct? So int turn, even in math we begin reading left to right out of habit. Sometimes you have the people that try to solve problems as they read them (not always the best method of doing something) and with math can almost always produce the wrong answer. The trick is to take your time and examine the problem before trying to solve it and some where along the way people forget that. Slow down and think, even if it is just 6 + 2 * 10. :)

Azmah 1 Junior Poster · Answer 17 · 2012-01-03T10:15:48+00:00

Your answer is right, BDove :) How is this Mathematical Fallacy?

Thanks for clearing things up dovakhiin :)

McLaren 3 Posting Whiz in Training · Answer 18 · 2012-01-06T19:46:15+00:00

:D how this thread could become so long? :D (didn' read all posts)

Ancient Dragon 5,243 Achieved Level 70 Team Colleague Featured Poster · Answer 19 · 2012-01-06T20:31:05+00:00

Thanks for assisting in proving my point, Ancient Dragon :D

The math you quoted was wrong. Both answers should have been 4 as someone else pointed out.

The Dude 944 Nearly a Senior Poster · Answer 20 · 2012-01-08T12:15:10+00:00

Every single time I ask someone that question I get 80

Thats because the answer IS 80!!

6+2X10

6+2=8

<6+2>=8x10=80 :)

Azmah 1 Junior Poster · Answer 21 · 2012-01-08T13:28:23+00:00

You are manipulating the equation -_- Besides, prove that you are correct? Have you even read the threads?

BDove 0 Newbie Poster · Answer 22 · 2012-01-09T13:37:30+00:00

How is this Mathematical Fallacy?

Please let us forget about my error. ;)

We are not the only ones who make algebraic errors. If done correctly a C program can be manipulated to commit an error like this. Look:

#define FOO 8
#define BAR 4
#define FOOBAR FOO+BAR

printf ("The answer is %d\n", 6*FOOBAR);

The program would throw 52 instead of 72. Crazy, eh? :) Look at the complete article: http://mirrors.zoreil.com/webclub.kcom.ne.jp/ma/colinp/win32/basics/baddefine.html

I used to commit theses errors too when I took my calculus class. Most students who fail at calculus fail because of algebraical errors (though I managed to notice in time that it was all about doing algebra correctly and didn't fail).

DanielMilstein 0 Junior Poster in Training · Answer 23 · 2012-01-10T13:53:36+00:00

In USA any 5th grade student should have known the correct answer. And Shame on anyone who is a programmer and doesn't know it.

Ha ha so correct!! but honestly they all get so busy with coding and have more in their minds that these basic things just slip away from mind!

jackbauer24 0 Junior Poster · Answer 24 · 2012-01-10T18:30:35+00:00

26. You should know this much being a programmer!!

stultuske 1,116 Posting Maven Featured Poster · Answer 25 · 2012-01-10T21:22:32+00:00

there I was thinking it was a mathematical operation.
as for the result, nyup, * has the upper hand there, so 6+20, not that hard to figure out :)

Azmah 1 Junior Poster · Answer 26 · 2012-01-11T11:03:36+00:00

That's fine, BDove :D

Isn't there a committee for for C as there is for C++ ?

I like calculus, very useful in all aspects of life. It's great you noticed soon ;) Did you tell the others?

Please let us forget about my error. ;)
We are not the only ones who make algebraic errors. If done correctly a C program can be manipulated to commit an error like this. Look:
#define FOO 8
#define BAR 4
#define FOOBAR FOO+BAR

printf ("The answer is %d\n", 6*FOOBAR);
The program would throw 52 instead of 72. Crazy, eh? :) Look at the complete article: http://mirrors.zoreil.com/webclub.kcom.ne.jp/ma/colinp/win32/basics/baddefine.html
I used to commit theses errors too when I took my calculus class. Most students who fail at calculus fail because of algebraical errors (though I managed to notice in time that it was all about doing algebra correctly and didn't fail).

Azmah 1 Junior Poster · Answer 27 · 2012-01-11T11:05:05+00:00

You do have a point! Programmers have sometimes far more important things to be concerned about :) Sometimes.

It depends what country for year 5s.

Ha ha so correct!! but honestly they all get so busy with coding and have more in their minds that these basic things just slip away from mind!

Azmah 1 Junior Poster · Answer 28 · 2012-01-11T11:05:35+00:00

I do :)

This thread is for fun and not all seriousness. Of course I know that all of you here know that ;)

26. You should know this much being a programmer!!

Azmah 1 Junior Poster · Answer 29 · 2012-01-11T11:07:49+00:00

Good on ya ;)

Can you please clarify what you mean by nyup? I think I get what you mean but need to clarify.

there I was thinking it was a mathematical operation.
as for the result, nyup, * has the upper hand there, so 6+20, not that hard to figure out :)

adamlisit 0 Newbie Poster Banned · Answer 30 · 2012-01-12T17:20:16+00:00

adamlisit 0 Newbie Poster

12 Years Ago

Total calculation of these numaric value output are:- 26.

Edited 12 Years Ago by Narue because: Snipped fake signature