Le Stu Posted April 12, 2011 Report Share Posted April 12, 2011 482(9+3) ? Quote Link to comment Share on other sites More sharing options...
Adam Easy Wishes Posted April 12, 2011 Report Share Posted April 12, 2011 = 2eight characters Quote Link to comment Share on other sites More sharing options...
Hugh_Jazz Posted April 12, 2011 Report Share Posted April 12, 2011 482(9+3) ?......288Division comes first. Quote Link to comment Share on other sites More sharing options...
ub7rm Posted April 12, 2011 Report Share Posted April 12, 2011 I'm also going with 2 Quote Link to comment Share on other sites More sharing options...
Woodsinho Posted April 12, 2011 Report Share Posted April 12, 2011 Pi is exactly 3. Quote Link to comment Share on other sites More sharing options...
Le Stu Posted April 12, 2011 Author Report Share Posted April 12, 2011 Excellent work. 2 and 288. Quote Link to comment Share on other sites More sharing options...
Hugh_Jazz Posted April 12, 2011 Report Share Posted April 12, 2011 2 and 288?? o_O Quote Link to comment Share on other sites More sharing options...
Le Stu Posted April 12, 2011 Author Report Share Posted April 12, 2011 not only that but at least 18 pages. Quote Link to comment Share on other sites More sharing options...
Adam Easy Wishes Posted April 12, 2011 Report Share Posted April 12, 2011 2 and 288?? o_OThis... ?(It's 2.Write it like this:48____2(9+3)It's 2. Quote Link to comment Share on other sites More sharing options...
Woodsinho Posted April 12, 2011 Report Share Posted April 12, 2011 The order of operations isn't explicit in the problem that Mr Le Stu has presented to us.Had it been 48(2(9+3) or (482)(9+3) we could have given a definitive single answer as standard practice is to resolve brackets before the multiplication/division stage but leaving it as 482(9+3) puts in some ambiguity which renders both answers valid. Woo! Quote Link to comment Share on other sites More sharing options...
Adam Easy Wishes Posted April 12, 2011 Report Share Posted April 12, 2011 Yup. Definitely 2.48 devided by 2 = 24then you do what's in the brackets, 9+3 is 12.then divide the first product by the second. 24 divided by 12 = 2.I can't find the divide symbol on my keyboard. I have no idea where anyone is getting 288 from.There is so much wrong with this.Correct answer, wrong method.48 / 2 (9 + 3)= 48 / 2 (12)= 48 / 24= 2 Quote Link to comment Share on other sites More sharing options...
Le Stu Posted April 12, 2011 Author Report Share Posted April 12, 2011 The order of operations isn't explicit in the problem that Mr Le Stu has presented to us.Had it been 48(2(9+3) or (482)(9+3) we could have given a definitive single answer as standard practice is to resolve brackets before the multiplication/division stage but leaving it as 482(9+3) puts in some ambiguity which renders both answers valid. Woo!nah, it's 2. Good attempt though. There's actually no ambiguity to the expression, just a rather ugly mix of natural and computer notation. people get 288 as they incorrectly interpret 2(9+3) as 2*(9+3) when it's actually (2*(9+3)) or as adam wrote it as a natural expression.Man, people go nuts over this though. Quote Link to comment Share on other sites More sharing options...
Woodsinho Posted April 12, 2011 Report Share Posted April 12, 2011 nah, it's 2. Good attempt though. There's actually no ambiguity to the expression, just a rather ugly mix of natural and computer notation. people get 288 as they incorrectly interpret 2(9+3) as 2*(9+3) when it's actually (2*(9+3)) or as adam wrote it as a natural expression.Man, people go nuts over this though.Instinct said "it's just 2". Overactive coffee brain said "fuck that, let's make things more complicated than is necessary".Still...I flippin' love maths. Quote Link to comment Share on other sites More sharing options...
Captain America Posted April 12, 2011 Report Share Posted April 12, 2011 does it not just work the same or was i just lucky that it worked this time?Convention is that you always have to resolve brackets first so in a larger equation your way would likely have given you a wrong answer. Quote Link to comment Share on other sites More sharing options...
Adam Easy Wishes Posted April 12, 2011 Report Share Posted April 12, 2011 Plus John, you also divided the product of the brackets with what was outside it, i.e.:x (y + z) = x/y+zWhich is incorrect as they should have been multiplied. Quote Link to comment Share on other sites More sharing options...
TR!ΔNGL€ T€€TH Posted April 12, 2011 Report Share Posted April 12, 2011 BODMAS.Brackets off, division, multiplication, addition, subtraction.Easy! 1 Quote Link to comment Share on other sites More sharing options...
Le Stu Posted April 12, 2011 Author Report Share Posted April 12, 2011 The other way to prove this is by substituting x for 2.48 / x(9+3) =28848 / 12x = 28848 = 12x * 28812x = 48 / 28812x = 1 / 6x = 1/72no.48 / x(9+3) =248 / 12x = 248 = 12x * 248 = 24x24x = 48x = 2Yes. Quote Link to comment Share on other sites More sharing options...
Jaaakkkeee Posted April 12, 2011 Report Share Posted April 12, 2011 482(9+3) ?Brackets first. But the brackets are done like this:2*9=182*3=6So...48/2(9+3) = 48/(18+6) = 48 / 24= 2.I did engineering Maths for 2 and a half years. This was about a year and a half ago, but I'm sure I'm right. Quote Link to comment Share on other sites More sharing options...
Le Stu Posted April 12, 2011 Author Report Share Posted April 12, 2011 Brackets first. But the brackets are done like this:2*9=182*3=6So...48/2(9+3) = 48/(18+6) = 48 / 24= 2.I did engineering Maths for 2 and a half years. This was about a year and a half ago, but I'm sure I'm right.that's it I'm actually applying for an engineering course so I've been revising basic maths. if you do enough algebra you'll instantly see it's 2 as you know how to resolve parentheses properly. Quote Link to comment Share on other sites More sharing options...
jon Posted April 12, 2011 Report Share Posted April 12, 2011 Fuck this, where's the thread about gerunds and split infinitives? Quote Link to comment Share on other sites More sharing options...
Jaaakkkeee Posted April 12, 2011 Report Share Posted April 12, 2011 Once you get doing some differentiation and polar numbers and stuff this stuff seems pretty easy... Quote Link to comment Share on other sites More sharing options...
Le Stu Posted April 12, 2011 Author Report Share Posted April 12, 2011 Once you get doing some differentiation and polar numbers and stuff this stuff seems pretty easy...yeah, that's what I'm afraid of bastards have set me a 'maths test' for my entrance interview. that means I have to revise everything Quote Link to comment Share on other sites More sharing options...
Jaaakkkeee Posted April 12, 2011 Report Share Posted April 12, 2011 Is it college or uni? The maths test shouldn't be too hard. Pretty simple.You end up doing a whole class on learning how to use your scientific calculator anyway. Quote Link to comment Share on other sites More sharing options...
Le Stu Posted April 12, 2011 Author Report Share Posted April 12, 2011 Is it college or uni? The maths test shouldn't be too hard. Pretty simple.You end up doing a whole class on learning how to use your scientific calculator anyway.college. I'm hoping it's just simple algebra, maybe trig and understanding log/exp scales.and yeah I have no idea how to work this casio thing. Quote Link to comment Share on other sites More sharing options...
Jaaakkkeee Posted April 12, 2011 Report Share Posted April 12, 2011 There's a guy at Aberdeen College that loves his calculators. Forgot his name but he's a legend when it comes to maths. You'll know who I'm on about. Quote Link to comment Share on other sites More sharing options...
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