Click Posted April 30, 2011 Share Posted April 30, 2011 I thank you Jay. I had a 70+ comment discussion on my FB about this. It was 50/50 among my FB friends. Another buddy and I tried to explain how it's PEM/DA/S and not strictly multiplication before division but left to right. I like the math doctorate dude's explanation. Link to comment Share on other sites More sharing options...
Chreees Posted April 30, 2011 Share Posted April 30, 2011 [quote name='Arcane' timestamp='1304096974' post='507460'] I think this explains it best and actually expounds mathematical concepts quite well: [quote] I am your college professor that you requested, with a doctorate in Mathematics. I will break this down as simply as possible and end this debate as approx. 10 students have already asked me this today. The problem as it is written is 6÷2(1+2) , the ÷ cannot be substituted with a fraction bar because they have different ranks on the order of operations. It is an illegal math move to do this. The bar ranks with parentheses, ÷ is interchangeable with *. therefore the problem must be solved as 6÷2(1+2) NOT 6 (over) 2(1+2) we do the parentheses first, so 6÷2(3), the parentheses are now no longer relevant, because the number inside is in it's simplest form. Every single number has implied parentheses around it. 6÷2(3) (6) ÷(2)(3) 6÷2*3, or even converting the division to multiplication by a reciprocal (a legal math move) (6)(1 (over) 2)(3) are all correct ways to write this problem and mean exactly the same thing. Using pemdas, where md and as are interchangeable, we work from left to right, so (3)(3) or 3*3= 9 Just because something is implied rather than written does not give it any special rank in the order of operations. The problem in it's simplest form, with nothing implied would look like this: (1+1+1+1+1+1 (over) 1) ÷ (1+1 (over) 1) * ((1(over) 1) + (1+1 (over) 1)) From here, nothing is implied, This again, works out to 9. If the symbol '/' was used this whole debate would be ambiguous since that symbol can mean "to divide by" or it could mean a fraction bar. HOWEVER, because the ÷ symbol is used, it can not be changed to mean a fraction bar because that would change the order of operations and thus the whole problem, you can't change a symbol to mean something because you want to, in doing so you are changing the problem. Once and for all, the answer is 9. Hopefully some of my students see this so I can stop answering this question. End of debate... hopefully. [b]Source(s):[/b] Doctorate, 9 years teaching experience.[/quote] [url="http://answers.yahoo.com/question/index?qid=20110427155042AACb7d8"]http://answers.yahoo...27155042AACb7d8[/url] I wonder if I can get Chris to post his mindfuck picture. [/quote] [quote name='vendetta_revived' timestamp='1304110605' post='507519'] [img]http://i1197.photobucket.com/albums/aa435/outkastmami305/GIFS/tumblr_lfar88vLju1qzh5j8o1_500.jpg[/img] [/quote] Damn you, Vendetta!!! Well here it is from me, Jay... [IMG]http://i124.photobucket.com/albums/p40/INCUBUSRATM/Funny%20pics%20and%20gifs/tumblr_lfar88vLju1qzh5j8o1_500.jpg[/IMG] Link to comment Share on other sites More sharing options...
king_lunchb0x Posted April 30, 2011 Share Posted April 30, 2011 i say 9 but i havent been in a math class in years. (1+2)=3 6/2=3 3*3=9 i remember it as parenthesis frist then solve left to right. oh well ive been wrong 1,000,000 times before why not make 1,000,001 Link to comment Share on other sites More sharing options...
vendetta_revived Posted April 30, 2011 Share Posted April 30, 2011 Hahaha! Sorry Chris. Couldn't resist. This depicts my then state of mind better though. [img]http://i830.photobucket.com/albums/zz227/nyxen/roflbot-9s6f.jpg[/img] Link to comment Share on other sites More sharing options...
Chreees Posted April 30, 2011 Share Posted April 30, 2011 [quote name='vendetta_revived' timestamp='1304161067' post='507571'] Hahaha! Sorry Chris. Couldn't resist. This depicts my then state of mind better though. [img]http://i830.photobucket.com/albums/zz227/nyxen/roflbot-9s6f.jpg[/img] [/quote] I like this one!!! Link to comment Share on other sites More sharing options...
Click Posted May 1, 2011 Share Posted May 1, 2011 [img]http://i.imgur.com/fcQHb.jpg[/img] Link to comment Share on other sites More sharing options...
Dr. B Posted May 1, 2011 Share Posted May 1, 2011 [quote name='Click' timestamp='1304230586' post='507683'] [img]http://i.imgur.com/fcQHb.jpg[/img] [/quote] 1337! Link to comment Share on other sites More sharing options...
method Posted May 1, 2011 Share Posted May 1, 2011 theres only one answer to this . got it ? woohoo ! that was witty . Link to comment Share on other sites More sharing options...
Dr. B Posted May 3, 2011 Share Posted May 3, 2011 uhhhh ohhhhh [img]http://gyazo.com/76b2a8a8a1024b8511ab8ac4d4aeded7.png[/img] Link to comment Share on other sites More sharing options...
vendetta_revived Posted May 3, 2011 Share Posted May 3, 2011 Not another one! That's 6 btw. Link to comment Share on other sites More sharing options...
rahl071 Posted May 4, 2011 Share Posted May 4, 2011 Your TI-80 series can be updated. If you do it as Arcane has stated multiple times, you get 9. My TI-89 gets 9, my 84 gets 9, my 30 gets 9. IDK what you guys are doing wrong. Link to comment Share on other sites More sharing options...
IainUM Posted May 4, 2011 Share Posted May 4, 2011 [quote name='Dr. B' timestamp='1304420124' post='508058'] uhhhh ohhhhh [img]http://gyazo.com/76b2a8a8a1024b8511ab8ac4d4aeded7.png[/img] [/quote] it scares me that there is a good amount of people that answered 8....... Link to comment Share on other sites More sharing options...
king_lunchb0x Posted May 4, 2011 Share Posted May 4, 2011 [quote name='IainUM' timestamp='1304485311' post='508191'] [quote name='Dr. B' timestamp='1304420124' post='508058'] uhhhh ohhhhh [img]http://gyazo.com/76b2a8a8a1024b8511ab8ac4d4aeded7.png[/img] [/quote] it scares me that there is a good amount of people that answered 8....... [/quote] but it is 8 Link to comment Share on other sites More sharing options...
ilikemyusername Posted May 13, 2011 Share Posted May 13, 2011 6 divided by 2 times 1 plus 2 will give you 9 every time. It may have been 10 years since the last time I saw an equation on paper but three times three is still nine. Link to comment Share on other sites More sharing options...
ilikemyusername Posted May 13, 2011 Share Posted May 13, 2011 Wow, I just went back and read this topic and I gotta say, some of you guys REALLY over-complicated it. Link to comment Share on other sites More sharing options...
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