Rummy Posted April 22, 2007 Share Posted April 22, 2007 Hello, I was over on 4chan because I was bored and checking out /b/, when something actually peaked my interest, there was a thread with this image attached. Anonymous 04/22/07(Sun)12:43:41 No.25170229 This is right. If you get 140 or 197 or something, then you need to go back to school because this is REALLY simple. So tell me N-E, do you think this is right or wrong? I personally thought it was right, as I was once taught about BODMAS, but everyone in the thread there seems to think it is wrong, and I typed it into excel(only thing I could think of available to me) and someone there typed it into something else, and they and my excel get it coming out as 197. Who is right? (Sorry if you feel this didn't warrant a whole new thread, but I think it's a rather interesting topic, and I know there's a few keen mathematicians here) Link to comment Share on other sites More sharing options...
spirited away Posted April 22, 2007 Share Posted April 22, 2007 I got +203. Link to comment Share on other sites More sharing options...
Rummy Posted April 22, 2007 Author Share Posted April 22, 2007 When I think about it though, had I seen the second line as the sum, I'd have gotten 197, or would I? It's the sort of thing I can't do as I would naturally because now I am conscious of it, and the sort of thing I'm so used to doing that I don't know how I do. Link to comment Share on other sites More sharing options...
DomJcg Posted April 22, 2007 Share Posted April 22, 2007 nah, it works as -203 i just loked at it plainly and saw it =\ Link to comment Share on other sites More sharing options...
Shorty Posted April 22, 2007 Share Posted April 22, 2007 do you know the first two rules of /b/? I'll give you a hint, they're similar to the first two rules of fight club It all depends on which order you do the sums. The lack of brackets surely makes it wrong in the first place.... Link to comment Share on other sites More sharing options...
Fresh Posted April 22, 2007 Share Posted April 22, 2007 BODMAS says -203, i will go with that *Thumbs up* Link to comment Share on other sites More sharing options...
ShadowV7 Posted April 22, 2007 Share Posted April 22, 2007 If there was brackets then I might of got -203 when I tried to figure it out first time,can easily trick folk.But now that I look at it with BODMAS I get the right answer. Link to comment Share on other sites More sharing options...
Rummy Posted April 22, 2007 Author Share Posted April 22, 2007 People there were saying that Multiplication and Division were of equal importance to each other, then Addition and Subtraction were of equal importance to each other, and when it comes down to it you just do it left to right. I should have thought though, if order could affect it, it kind of flaws the logical basis of maths slightly? Link to comment Share on other sites More sharing options...
DomJcg Posted April 22, 2007 Share Posted April 22, 2007 People there were saying that Multiplication and Division were of equal importance, then Addition and Subtraction were of equal importance, and when it comes down to it you just do it left to right.I should have thought though, if order could affect it, it kind of flaws the logical basis of maths slightly? but thats wrong bodmas proves this line of working to be right, how dare they defy bodmas! Link to comment Share on other sites More sharing options...
Rummy Posted April 22, 2007 Author Share Posted April 22, 2007 They weren't denying it as such, they were just saying that they're equal, it's just called BODMAS(or PEMDAS) because one obviously must be written before the other, and BODMAS is an easier way to remember and think of it. Link to comment Share on other sites More sharing options...
Ginger_Chris Posted April 22, 2007 Share Posted April 22, 2007 2-5+10*20 = 197 No questions asked, using his logic you could get pretty much any answer you wanted just by rearranging. The only way to get is answer would be by 2- (5+200), but thats not what the question was. Addition and subtraction are COMPLETELY equal, in fact subtraction is simply the addition of a negative number. So yea... you've been told, or something. Link to comment Share on other sites More sharing options...
conzer16 Posted April 22, 2007 Share Posted April 22, 2007 BOMDAS says -203. But taking it from left to right says 197! Link to comment Share on other sites More sharing options...
Ginger_Chris Posted April 22, 2007 Share Posted April 22, 2007 BODMAS does not in way, shape, and/or form say that that adds up to -203. ever. Link to comment Share on other sites More sharing options...
EEVILMURRAY Posted April 22, 2007 Share Posted April 22, 2007 2-5+10*20 = 197 The all powerful windows calculator says it's 140. Link to comment Share on other sites More sharing options...
Zell Posted April 22, 2007 Share Posted April 22, 2007 Bodmas gives you 197. 197 is the correct answer. 2 - 5 + 200 = (+2) + (-5) + (+200) = 197. Link to comment Share on other sites More sharing options...
Ginger_Chris Posted April 22, 2007 Share Posted April 22, 2007 the only way you can get 140 = 2*(20+(5*10)). I'd love to know how you managed to input that. Link to comment Share on other sites More sharing options...
Twozzok Posted April 22, 2007 Share Posted April 22, 2007 haha /btard XD i get 197 but then who cares. rearranging the top bit i can also get -203. Link to comment Share on other sites More sharing options...
Zell Posted April 22, 2007 Share Posted April 22, 2007 People got 140 by doing this: [(2 -5) + 10] x 20 = 140 I'll say it once again. Bodmas does not get you -203. EDIT: i get 197 but then who cares. rearranging the top bit i can also get -203. The only answer to the question is 197. The only way you can get different answers is by adding brackets. Link to comment Share on other sites More sharing options...
Charlie Posted April 22, 2007 Share Posted April 22, 2007 People got 140 by doing this: [(2 -5) + 10] x 20 = 140 I'll say it once again. Bodmas does not get you -203. EDIT: The only answer to the question is 197. The only way you can get different answers is by adding brackets. I can get -203 using BODMAS... Brackets... None Of... (i'm sure someone once told me that can mean multiply, but either way, it doesn't matter) None Divide... None Multiply... 2 - 5 + 200 Add... 2 - 205 Subtract... -203 Link to comment Share on other sites More sharing options...
ShadowV7 Posted April 22, 2007 Share Posted April 22, 2007 Bodmas does,you times the 10 and 20 with each other to give 200,then next is to add 5 onto the 200,which gives you 205.Then the next step is to di 2-205 = -203. Stage 1: 10*20 Stage 2:5+200 Stage 3:2-205 Link to comment Share on other sites More sharing options...
AshMat Posted April 22, 2007 Share Posted April 22, 2007 Something intelligent on /b/? Damn i must have missed that. Haven't been on much today anyway. Link to comment Share on other sites More sharing options...
Eenuh Posted April 22, 2007 Share Posted April 22, 2007 I've always been taught this rule: brackets first, then to what power it is, then divide and multiply and lastly addition and subtraction. Also, go from left to right. Addition and subtraction are equal, which means that you should get 197. I'd never heard of BODMAS before and had to look it up. Weird thing, especially since it seems to imply addition and subtraction are not equal. Link to comment Share on other sites More sharing options...
Zell Posted April 22, 2007 Share Posted April 22, 2007 I can get -203 using BODMAS... Brackets... None Of... (i'm sure someone once told me that can mean multiply, but either way, it doesn't matter) None Divide... None Multiply... 2 - 5 + 200 Add... 2 - 205 Subtract... -203 Those two steps don't translate I'm afraid. You see, the minus sign is "attached" to the 5. What you're doing is this: 2 - (5 +200) which equals 2 - 5 - 200 You're adding 5 to the 200 and then negating both of them, and of course it's not a five you should be adding but a -5. Once again: 2 - 5 + 200 = (+2) + (-5) + (200) = 197 Link to comment Share on other sites More sharing options...
Rummy Posted April 22, 2007 Author Share Posted April 22, 2007 So it is true then that multiplication and division are equal to each other in importance, and also addition and subtraction are equal to each other in importance as well? And therefore in any such situation involving them the priority is given left to right? The all powerful windows calculator says it's 140. Actually, and rather interestingly, it gives both 140 and 197. Try it in standard mode, then do the exact same inputting in in scientific mode Link to comment Share on other sites More sharing options...
EEVILMURRAY Posted April 22, 2007 Share Posted April 22, 2007 the only way you can get 140 = 2*(20+(5*10)). I'd love to know how you managed to input that. I clicked the following buttons 2 - 5 + 10 * 20 = Link to comment Share on other sites More sharing options...
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