POLL: A simple mathematical problerm - Cheat Happens General Discussions Message Board (Page 6)

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 MESSAGE BOARDS >> GENERAL DISCUSSIONS POLL: A simple mathematical problerm

by Neo7
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 Skyheart send PM view profile add to friends User #: 308147 Posts: 1616 Joined: Oct 07, 2007 Last visit: Aug 18, 2014
 Posted: Apr 09, 2011 6:22:15 AM - Report post (0) (0) post reply
 "originally posted by Rise_Against:I just realized that 2(9+3) should go first as DABhand said. So it would be everything in that bracket multiplied by 2 and then 48 divided by that answer. So the correct answer should be 2."But for that to be, the equation would have to be 48/(2(9+3)). However, no part of 48/2 is bracketed, therefore is its own individual division. You can assume the brackets are implied, but generally if they should be there they are. Refer to my previous post about hoofbeats.[Edited by Skyheart, 4/9/2011 6:28:10 AM]
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 Neo7 send PM view profile add to friends User #: 475 Posts: 8047 Joined: Jan 17, 2004 Last visit: Aug 21, 2014
 Posted: Apr 09, 2011 7:49:33 AM - Report post (0) (0) post reply
 An interesting note was that when plugged into C#, the compiler interpreted the 2(9+3) part as the 2 being a call to a method with '9+3' as the argument and threw an error. You had to modify it as 2 * ( 9 + 3 ) before it will accept it as a math problem. The terminal output was 288. [Edited by Neo7, 4/9/2011 7:50:12 AM]
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 teslagod2003 send PM view profile add to friends User #: 58682 Posts: 1520 Joined: Mar 12, 2005 Last visit: Mar 22, 2014
 Posted: Apr 09, 2011 7:53:14 AM - Report post (0) (0) post reply
 i myself used to be math addict,that's when i'm at school,but since i'm getting older,i'm having some memory gaps and getting slow in thinking and kinda forgotten many things i did to make my math subject really easy for me,like forming my own way of solving problems...since i'm old now,yet as far as i last knew,as long as there's no bracket or no mention that division would be go 1st,the rules is always multiplication 1st before division,that's the last i know,maybe new mathematicians are now making their new laws and rules in problem solving...and the last time i was at school,2007,college,uhm,the problem solving i'm dealing with muchly is about trigonometric things( you know,the thing where there is horrizontal and vertical lines that are intersecting,then you figure out something or make shapes) and algebraic things(where you figure out what was missing or which letters should not be added/subtracted or should be multiplied/divided,which is sometimes confusing since ther's so many letters being used)...so i'm really kinda keen on this kind of matter,yet still as i said,the mathematical rule states that multiplication 1st before division...if i'm not mistaken...48/2(9+3) would be like this...482(9+3)unless rules and mathematical solutions where changed by the last few years...or that symbol that i just find out which means "half then multiply" is considered a bracket on its own which would make the equation like this...(48/2)(9+3)since that symbol stated half the multiply,then division should come 1st before multiplication...but as i said before i'm getting rusty on math,so i'm not really intending to argue,just wanna help up,but also add somethings on my knowledge,like that symbol which means "half then multiply" which i just recently added to my knowledge,and i hope it stays on my memory...aging and lacking of practice could rust up someone's memory,like mine.....[Edited by teslagod2003, 4/9/2011 8:02:02 AM]
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 Unbreakable send PM view profile add to friends User #: 259617 Posts: 891 Joined: Jul 08, 2007 Last visit: Aug 01, 2014
 Posted: Apr 09, 2011 6:18:28 PM - Report post (0) (0) post reply
 I put it into my calculator and it tells me it's 2.[Edited by Unbreakable, 4/9/2011 6:22:52 PM]Here, I put a video to show you. Link (also, before you ask I have no idea why a second mouse is just chilling out on my desktop. also, it was my first time testing out my screen recorder, so I didn't know where the "stop" was, so that's why the ending was so long. And i wasn't going to bother editing it out..i'm too lazy) [Edited by Unbreakable, 4/9/2011 6:38:06 PM]
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 Neo7 send PM view profile add to friends User #: 475 Posts: 8047 Joined: Jan 17, 2004 Last visit: Aug 21, 2014
 Posted: Apr 09, 2011 7:36:03 PM - Report post (0) (0) post reply

 quote: originally posted by Unbreakable:I put it into my calculator and it tells me it's 2.[Edited by Unbreakable, 4/9/2011 6:22:52 PM]Here, I put a video to show you. Link (also, before you ask I have no idea why a second mouse is just chilling out on my desktop. also, it was my first time testing out my screen recorder, so I didn't know where the "stop" was, so that's why the ending was so long. And i wasn't going to bother editing it out..i'm too lazy) [Edited by Unbreakable, 4/9/2011 6:38:06 PM]

Here it is in C#:

Original Equation

Modified so that it doesn't read 2 as method:

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 sitruc send PM view profile add to friends User #: 487622 Posts: 71 Joined: Jul 27, 2008 Last visit: Aug 19, 2014
 Posted: Apr 11, 2011 5:09:53 PM - Report post (0) (0) post reply
 288 It's all I'm saying.
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 H send PM view profile add to friends User #: 699389 Posts: 1900 Joined: Apr 28, 2009 Last visit: Aug 15, 2014
 Posted: Apr 11, 2011 6:49:06 PM - Report post (0) (0) post reply

 quote: originally posted by Rise_Against:48/2(9+3)=24(12)=288

48/2(9+3)
=24/12= 2
Or 24 × 1/12= 2!

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 skittles234 send PM view profile add to friends User #: 236940 Posts: 306 Joined: May 12, 2007 Last visit: Oct 02, 2011
 Posted: Apr 11, 2011 9:07:59 PM - Report post (0) (0) post reply

quote:
originally posted by H:

 quote: originally posted by Rise_Against:48/2(9+3)=24(12)=288

48/2(9+3)
=24/12= 2
Or 24 × 1/12= 2!

While, 2!=2*1=2, if you made this same mistake if were like 4 ie. 4!=4*3*2*1=/=4. you would run into some problems...

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