Wazua
»
Club SK
»
Culture
»
CITIZEN GETS IT ALL WRONG!!!
Rank: Elder Joined: 7/11/2012 Posts: 5,222
|
poundfoolish wrote: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 I think we @14, are being intentionally marginalized! Tunaomba serikali......
|
|
|
Rank: Elder Joined: 7/1/2011 Posts: 8,804 Location: Nairobi
|
quicksand wrote: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. You are right up to the point of maintaining a status quo. But a status quo is social. And its values are questionable. Example: 'Professor' is a social symbol, 'P' is an abstract symbol that can be used in mathematics.
|
|
|
Rank: Member Joined: 7/14/2011 Posts: 171
|
Surely how can it be 13???... 21-6+2. 21 is positive (+21), 6 is negative (-6), 2 is positive (+2). Having said that +/- have same precedence and shud be performed from left to right. That means you get same answer even after rearranging. 21-6+2 = +21-6+2 = -6+21+2 = +21+2-6 = +2-6+21..... hata ukioba serikari iingirie..the ans is 17 You kill bird...bird dead snake come.
|
|
|
Rank: Elder Joined: 3/18/2011 Posts: 12,069 Location: Kianjokoma
|
|
|
|
Rank: Elder Joined: 3/18/2011 Posts: 12,069 Location: Kianjokoma
|
poundfoolish wrote: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 OK. The ans is 17! But if your 10year old son asks, it's 13!Otherwise he'll fail his maths paper for overthinking!
|
|
|
Rank: Elder Joined: 3/18/2011 Posts: 12,069 Location: Kianjokoma
|
Gadaffi wrote: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  I asked some ladies and they gave 13 as the ans. Those workmates of yours are wazuans
|
|
|
Rank: Elder Joined: 10/23/2008 Posts: 3,966
|
Haha, hii BODMAS imekuwa BADMATH. I don't know how I missed this thread. 17. Luck is when Preparation meets Opportunity. ~ Lucius Annaeus Seneca
|
|
|
Rank: Chief Joined: 3/24/2010 Posts: 6,779 Location: Black Africa
|
GOD BLESS YOUR LIFE
|
|
|
Rank: Elder Joined: 6/27/2008 Posts: 4,114
|
Numbers standing alone by themselves are totally meaningless! Some one asks you to work out 21-3×2+4÷2 Before you take out your calc, you should ask to be told: 21 what? 3 what? 2 what? 4 what? 2 what? That is the only way you can get to the correct answer. Otherwise, I will ask what is BODMAS, who invented it and why? After all; didn't John Wheeler say that you should never do a calculation unless you know the answer? Nothing is real unless it can be named; nothing has value unless it can be sold; money is worthless unless you spend it.
|
|
|
Rank: Member Joined: 4/28/2011 Posts: 213
|
from the thread kumbe si mimi nilipata E peke yangu,but it all depends on who was right after all....
|
|
|
Rank: Elder Joined: 3/2/2009 Posts: 26,328 Location: Masada
|
The post should now read "WAZUANS GOT IT ALL WRONG" Portfolio: Sold
You know you've made it when you get a parking space for your yatcht.
|
|
|
Rank: Elder Joined: 8/11/2010 Posts: 1,588
|
I have not even tried to try it.
|
|
|
Rank: Elder Joined: 7/11/2012 Posts: 5,222
|
mukiha wrote:Numbers standing alone by themselves are totally meaningless!
Some one asks you to work out 21-3×2+4÷2
Before you take out your calc, you should ask to be told:
21 what?
3 what?
2 what?
4 what?
2 what?
That is the only way you can get to the correct answer.
Otherwise, I will ask what is BODMAS, who invented it and why?
After all; didn't John Wheeler say that you should never do a calculation unless you know the answer? John Wheeler what?
|
|
|
Rank: Elder Joined: 4/9/2008 Posts: 2,824
|
maths is a hard nut to crack.... http://www.youtube.com/watch?v=vU5LoCLGMdQWhen I have money, I get rid of it quickly, lest it find a way into my heart.
|
|
|
Rank: Elder Joined: 10/23/2009 Posts: 2,375
|
|
|
|
Rank: Veteran Joined: 11/9/2009 Posts: 2,003
|
|
|
|
Rank: New-farer Joined: 1/25/2012 Posts: 15
|
21-3x2+4/2 BODMAS 21-(3x2)+ 4/2 21-6+(4/2) 21-6+2 15 + 2 =? or 21+2-6 =!!! Maths is fun Wealth, like happiness, is never attained when sought after directly. It comes as a by-product of providing a useful service - Henry Ford
|
|
|
Rank: Elder Joined: 12/2/2009 Posts: 2,458 Location: Nairobi
|
138 posts and still going strong....
"Dear Maths.
Please grow up and solve your own problems!!"
on a Tee-shirt
|
|
|
Rank: Elder Joined: 10/23/2009 Posts: 2,375
|
  It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt...
-Mark Twain
|
|
|
Rank: Elder Joined: 2/26/2012 Posts: 15,980
|
One forte "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
.
|
|
|
Wazua
»
Club SK
»
Culture
»
CITIZEN GETS IT ALL WRONG!!!
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
|