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CITIZEN GETS IT ALL WRONG!!!
Rank: Member Joined: 12/2/2009 Posts: 299 Location: kenya
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So where are we on this one.Me this 13 is the collect answer.Whichever way u look at it.
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Rank: Member Joined: 7/31/2009 Posts: 743
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kenmac wrote:what is the difference between ; 21 - 6 + 2 and 21 + 2 - 6 ???  the difference is the same seriously now that we are stuck at AS (BODM AS): 21-6+2= Add first -6+2= -4 Then subtract so then 21-4= 17 Thank me later 
Problems can get out of proportion, and not only in the wee small hours. Don't let the problems eclipse the Master. Let the Master eclipse the problems.
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Rank: Veteran Joined: 7/5/2010 Posts: 2,061 Location: Nairobi
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popat wrote:So where are we on this one.Me this 13 is the collect answer.Whichever way u look at it. Type 21-3×2+4÷2 exactly as is into the Google search box, hit Enter ... Alternatively type =21-3*2+4/2 into the Excel expression bar (with the equals sign) Both evaluate to 17. Not convinced? Enter the expression in WolframAlpha http://www.wolframalpha.comthe site ran by Wolfram Research, the guy who invented Mathematica. To those who insist 13, the people who programmed Excel and Google are brighter than you, and Wolfram is a certified Mathematical genius, I am not saying I am at par with them, far from it but at least I can evaluate this equation correctly ... 17 is the answer ..end of story.
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Rank: Elder Joined: 10/1/2009 Posts: 2,436
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wa wa wa how did I miss these thread?!
1O3 posts, including what looks like the beginning of a discussion paper....
17 is the answer.
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Rank: Elder Joined: 6/21/2008 Posts: 2,490
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I got an A in mathematics’. Answer is 17The man who marries a beautiful woman, and the farmer who grows corn by the roadside have the same problem
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Rank: Member Joined: 5/7/2009 Posts: 155
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Sufficiently Philanga....thropic wrote:Im soo with @mwenza on this.
Pls lets use our akili!
17 it is!
Evn Bodmas is used with akili! HAHA.... use a spreadsheet as follows (21-6+2) A1 21 A2 -6 A3 2 Sum(A1:A3) = 17 BODMAS is applicable with intelligence!
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Rank: Elder Joined: 9/23/2010 Posts: 2,221 Location: Sundowner,Amboseli
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popat wrote:So where are we on this one.Me this 13 is the collect answer.Whichever way u look at it. You must be very difficult! @SufficientlyP
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Rank: Elder Joined: 7/1/2011 Posts: 8,804 Location: Nairobi
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quicksand wrote:popat wrote:So where are we on this one.Me this 13 is the collect answer.Whichever way u look at it. Type 21-3×2+4÷2 exactly as is into the Google search box, hit Enter ... Alternatively type =21-3*2+4/2 into the Excel expression bar (with the equals sign) Both evaluate to 17. Not convinced? Enter the expression in WolframAlpha http://www.wolframalpha.comthe site ran by Wolfram Research, the guy who invented Mathematica. To those who insist 13, the people who programmed Excel and Google are brighter than you, and Wolfram is a certified Mathematical genius, I am not saying I am at par with them, far from it but at least I can evaluate this equation correctly ... 17 is the answer ..end of story. If a certified mathematical genius makes a statement, then that statement is true. Wolfram states that 21-6+2= 17. And Wolfram is a mathematical genius. Therefore the statement 21-6+2= 17 is true. Clearly this proof is not relying on mathematics. It relies on social postulates, that is on our judgment on a person as a mathematical genius or that he scored an A in his exams. This argument still holds for any program made by humans. But in essence it cannot be a proof. I say the answer is 17 because it is the consequence of a simple and 'natural' ordering procedure and as beings with limited rationality we 'should' always seek to simplify. That is conform as much as possible, with 'nature'.
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Rank: Member Joined: 5/7/2010 Posts: 282 Location: Nairobi
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Rank: Member Joined: 1/24/2011 Posts: 407 Location: Nairobi,Kenya
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Tebes wrote:The Know Zone program, Mathematics section, gets it all wrong and the presenters need to go to school first before they mislead children. sample this, 21-3×2+4÷2= These idiots are giving the answer as 20.  The answer is 20...Nobody said use BODMAS! Hope is not a strategy
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Rank: Elder Joined: 7/1/2011 Posts: 8,804 Location: Nairobi
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sanity wrote:Tebes wrote:The Know Zone program, Mathematics section, gets it all wrong and the presenters need to go to school first before they mislead children. sample this, 21-3×2+4÷2= These idiots are giving the answer as 20. The answer is 20...Nobody said use BODMAS! Perhaps a more 'natural' ordering system! BODMAS is a social institution that is being taken for granted. It is a dictator. But we may as well create a new dictator or say that all answers are valid and true! How this question is liberating my mind is beyond words! Nice one @Sanity!
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Rank: Elder Joined: 3/2/2009 Posts: 26,328 Location: Masada
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King G wrote:Impunity wrote:jaggernaut wrote:tycho wrote:21-6+2= 21-(6+2)= 21-6-2= 21-8= 13. Wrong! 21-6+2= 21-(6-2)=21-4= 17 @McReggae and I got the answer to this sum loooong time ago (ingawa he scored a strong D- plane in the final KCSE exam ) negative6 positive2 ndio watu wamechidwo kuerewa.  Plane? Which one is that, kizungu nayo? D-steady. Portfolio: Sold
You know you've made it when you get a parking space for your yatcht.
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Rank: Veteran Joined: 7/5/2010 Posts: 2,061 Location: Nairobi
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tycho wrote:quicksand wrote:popat wrote:So where are we on this one.Me this 13 is the collect answer.Whichever way u look at it. Type 21-3×2+4÷2 exactly as is into the Google search box, hit Enter ... Alternatively type =21-3*2+4/2 into the Excel expression bar (with the equals sign) Both evaluate to 17. Not convinced? Enter the expression in WolframAlpha http://www.wolframalpha.comthe site ran by Wolfram Research, the guy who invented Mathematica. To those who insist 13, the people who programmed Excel and Google are brighter than you, and Wolfram is a certified Mathematical genius, I am not saying I am at par with them, far from it but at least I can evaluate this equation correctly ... 17 is the answer ..end of story. If a certified mathematical genius makes a statement, then that statement is true. Wolfram states that 21-6+2= 17. And Wolfram is a mathematical genius. Therefore the statement 21-6+2= 17 is true. Clearly this proof is not relying on mathematics. It relies on social postulates, that is on our judgment on a person as a mathematical genius or that he scored an A in his exams. This argument still holds for any program made by humans. But in essence it cannot be a proof. I say the answer is 17 because it is the consequence of a simple and 'natural' ordering procedure and as beings with limited rationality we 'should' always seek to simplify. That is conform as much as possible, with 'nature'. I don't know where you get this social postulates stuff from,..and Wolfram didn't directly state that 21-6+2= 17 ... he made an inference engine in which the left to right rule is clearly apparent. As is also the case with Excel and Google. What I have done is similar to an author of a paper referencing a more detailed, expert focused paper. I am saying, look at these guys, and their expertise and work, and they do it this way, and their claim is probably more correct as opposed to your BODMAS theory from lower primary school. It is in essence proof. It is normal to defer to people who know more than you, esp in a scientific issues because there is a systematic way of establishing theories and proofs,...invoking tired predicates becomes unnecessary, the credentials speak loud enough. In any case, if I was a total moron in maths and you placed a maths professor and some guy who works as a lawyer or real state agent to puzzle a maths equation, I would probably believe the professor.
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Rank: Member Joined: 2/13/2011 Posts: 284 Location: Nairobi
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Hehehe...i placed this ques to colleagues in th office n surprisingly all th ladies said th ans is 17 while all th men thot the ans is 13..thats wierd
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Rank: Member Joined: 8/11/2009 Posts: 481
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mwenza wrote:kenmac wrote:mwenza wrote:Cant see any other answer. BODMAS OR NO BODMAS, SEVENTEEN it is!! People should not apply bodmas blindly.  demonstrate through a calculation. 21-3x2+4/2 =(21)-(3x2)+(4/2) =21-(6)+(2) =15+2 =17 QED@kenmac, does this make sense? @faa, thats how some adults were taught after skipping lower primary. It looks like lower primary was unnecessary afterall. Why bother with primo if you are sure of doing Laplace Transform at some point? Sasa nani naambia wewe kuongesa brackets yako? You must be using BADMAS (Brackets, ADD, Multi...) instead of BODMAS. My teacher 'pharaoh' would tell you in class; "Mwanza you are very thick. Infact you are as thick as magma"  "The longer the fuse the mightier the blast!"
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Rank: Elder Joined: 2/26/2012 Posts: 15,980
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15 people "There are only two emotions in the market, hope & fear. The problem is you hope when you should fear & fear when you should hope: - Jesse Livermore
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Rank: Elder Joined: 11/15/2011 Posts: 4,518
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SMH!! 48 hrs later. "The true measure of a man is how he treats someone who can do him absolutely no good.
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Rank: Elder Joined: 6/20/2012 Posts: 3,855 Location: Othumo
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Citizen did not want such kind of debate that is why they chose a neutral answer; 20. I will go with that Thieves
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Rank: Elder Joined: 6/21/2008 Posts: 2,490
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Rank: Elder Joined: 12/2/2009 Posts: 2,458 Location: Nairobi
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Is there anybody else still insisting on 13..? or we have now created a contest within our own heads...?
Every body seems to be in agreement its 17..
120 posts and still rolling
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