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Argomento del sondaggio nel forum
5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0 = ?
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Topic: 5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0 = ? |
353 risposte
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Quote ( Mairo Toom @ April 4th 2012,16:14:32 )
Nokia 3310 has crappy calculator.
Samsung GT-E2152 Dual Sim?
Quote ( Mairo Toom @ April 4th 2012,16:19:44 )
I wonder how Daneks have got so far (Elite) like that ? :o
Because assumption that this game is based on maths is first mistake You are doing
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Maths is needed if you want to know how much fuel you need, though.
Quote ( Emeric Moisan @ April 4th 2012,16:10:45 )
Did you try yourself... and the answere is :
"Math Homework Answers Log InLogin Register
what is the answer to: 5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0 =
What is the answer to this and in what order do you perform operations?
Order of operation says ( exponents first then multiply/diide then add/subtract_ ) so first you do the multiplication 5x0=0
5+5+5-5+5+5-5+0
since now its all add/subtract the order doesnt matter according to order of operations you add/subtract from left to right
the answer is 15 "
That's what I said, so why are you trying to disagree with me? lol
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Does the fact that there are people insisting the answer is 0 prove the fact that the question is ambiguous to people insisting the answer is 15?
It should.
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Quote ( Wopke Hoekstra @ April 4th 2012,16:27:42 )
Maths is needed if you want to know how much fuel you need, though.
Past data knows it better :)
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Well, let's make an easy GPRO example:
You wanna know how much fuel you used in X stint:
78 Fuel refilled
1% fuel left in tank:
78+180*0,01
So you used 2,58 Liters of fuel right :P
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Quote ( Eric Bolder @ April 4th 2012,16:15:36 )
Its obv 15 not even discussing needed -_-. Kinda sick that 38.5% (atm the ones who didnt pick 15) people fail at basic calculations. The true % will be a bit lower ofcourse because some people will have picked other answers for giggles! But still 30% whaaaaaaat!!!
Ok, why is zero green then?
And you say it is just around 30% ppl on this forum, imo it is more than that, but that off topic :D
Answer depends on point of view, I put zero anyway and what if I am wrong :P
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Quote ( Dominik Kopča @ April 4th 2012,16:30:41 )
Ok, why is zero green then?
Cuz you placed your vote on 0 :D
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Quote ( Márfi Norbert @ April 4th 2012,16:35:06 )
Of course, 0 !!
*facepalms*
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Quote ( Rich Cox @ April 4th 2012,01:26:20 )
Let me try again :p
5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0 = ?
5 + 5 + 5 - 5 + 5 + 5 - 5 + 0 = ?
Add brackets in to separate the addition!
(5 + 5 + 5) - (5 + 5 + 5) - (5 + 0) = ?
Now complete the addition:
15 - 15 - 5 = -5
wrong
(5 + 5 + 5) - (5 + 5 + 5) - (5 + 0) ≠ 5 + 5 + 5 - 5 + 5 + 5 - 5 + 0
(5+5+5) - (5+5+5) - (5+0) = 1x(5+5+5) -1x(5+5+5) -1x(5+0) = 5+5+5-5-5-5-5-0 = -5
good
5+5+5-5+5+5-5+5x0 = 15
(5+5+5-5+5+5-5) + (5x0) = 1x(5+5+5-5+5+5-5) +1x(5x0) = 5+5+5-5+5+5-5+0 = 15
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@Wopke
sorry I misread this...
Quote ( Wopke Hoekstra @ April 4th 2012,15:43:31 )
You should only work from left to right with equal stuff like multiplying and dividing, or plus and minus, not with multiply and plus...
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Quote ( Sion Francis @ April 4th 2012,16:29:06 )
Does the fact that there are people insisting the answer is 0 prove the fact that the question is ambiguous to people insisting the answer is 15?
It should.
not really
a lot of people can insist on many things that aren't true, yet the question isn't ambiguous at all
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Quote ( Márfi Norbert @ April 4th 2012,16:35:06 )
Of course, 0 !!
And how you got 0 if I may ask ?
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Quote ( Marcelo Michelini @ April 4th 2012,16:37:31 )
a lot of people can insist on many things that aren't true,
Don't bring religion into this!
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Actually you just did Jed, not Marcelo XD
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Quote ( Franco Dei Cas @ April 4th 2012,16:41:34 )
Actually you just did Jed, not Marcelo XD
Technicalities :P
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Quote ( Jed Lilly @ April 4th 2012,16:40:55 )
Don't bring religion into this!
You just did, didn't you
I for example insist there is lepricon gold at the end of the rainbow and yet it might not be true... :D
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Quote ( Marcelo Michelini @ April 4th 2012,16:37:31 )
not really
a lot of people can insist on many things that aren't true, yet the question isn't ambiguous at all
Equally a lot of people can insist on many contradictory viewpoints and both be wrong or both be somewhat correct, dependant on perspective.
This is not ambiguous:
using Bodmas, calculate 5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0
equally, this is not ambiguos:
using left to right calculate 5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0
---
5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0
by itself is thoroughly ambiguous. What if Daneks is the one proposing the question? He'd obviously be expecting you to do it left to right, thus you would be incorrect in giving a BODMAS based answer to a Daneks asking the question. Equally if it was a year 8 maths question you should know the answer is supposed to be BODMAs based and that therefore left to right is incorrect.
If it is an unknown asking the question it is incorrect to assume bodmas because the correct answer depends on the perspective of the person asking the question....thus the only correct way to approach the question is to ascertain what laws he wants you to follow. In the absence of that, you should expressly state any assumptions made in an answer.
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No. It's just because those kids are too noob at maths to understand BODMAS. That does not change the fact that left to right is wrong, they just introduced it for people that can't do maths (yet).
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I know that in some countries people read from right to left....Unfortunately I'm reading from left to right
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Every informatiocian will say You - in this case the only good answer is: "F"!!!
Quote ( Daneks Britāls @ April 4th 2012,16:13:04 )
I put it in every calculator I have (PC, phone, standart one), I asked every friend I know....The answer always is 0 (ZERO) ... So sorry :D
In PC Calc: "View" --> "Scientific" and result will be 15.
Sometimes You think wrong, but get right answer:
In ancient Babilon ppl knew that Earth is round. Why? Because if You go to the west You can find elephants and if You go to east, You can find elephants too...
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Quote ( Daneks Britāls @ April 4th 2012,16:13:04 )
put it in every calculator I have (PC, phone, standart one), I asked every friend I know....The answer always is 0 (ZERO) ... So sorry :D
Why not just calculate it by yourself.. ? the world is going crazy and lazy )
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Quote ( Valentinas Suminas @ April 4th 2012,16:59:14 )
Why not just calculate it by yourself.. ?
*TIP* He is Latvian :P
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If You will read from right to left, the answer will be...
15
But if You read from left to right - well, then the answer is unfortunatelly...
15
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Quote ( Sion Francis @ April 4th 2012,16:53:38 )
good point of view - but is there anywhere that this left to right system is allowed to be used in mathematics (aside from coding languages, which apparently work a bit differently than other maths (to my limited knowledge - please correct me if I'm wrong))? I'm just genuinely interested
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Not often I disagree with you, Sion, but I disagree with you here. I see where you are coming from, but order of operations is there to remove any such ambiguity, and using "left to right" is not accepted mathematics, that would be someone making their own rule.
Take your examples to extremes...
If I ask you what is 2 x 8, then you would say 16. But I could then say you are wrong as I want x to mean addition so the answer is 10. Just because someone doesn't know or understand a basic mathematical rule does not make them correct when ignoring or changing it.
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Quote ( Emeric Moisan @ April 4th 2012,13:41:39 )
When there isn't any indication on what rule we should use, we could assume that it's the common rule that prevails...
Quote ( Mattias Svensson @ April 4th 2012,13:45:20 )
I think that is a majority rule. Working left to right would obviously be an exception to just simplify coding in rare cases. A very short leap of faith imo.
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Quote ( Mairo Toom @ April 4th 2012,17:00:15 )
*TIP* He is Latvian :P
Wrong :D
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So Sion, if asked such a question in a general knowledge test, simply plain
5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0 =
What would you answer?
You make some valid points, honestly i didn't even know what BODMAS was before seeing the thread, but still i've searched and haven't found left to right to be a rule.
You can say that is used in programs and such, but those from my POV are just tools, and you need to input things right, following set rules
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Quote ( Daneks Britāls @ April 4th 2012,17:01:12 )
Wrong :D
Okay, then I don't know why he don't use he's head :D
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