EPT
A Simple Math Problem? - Page 13
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Kamais_Ookin
Canada4218 Posts
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MajorityofOne
Canada2506 Posts
On April 08 2011 06:31 FroZen(-_-) wrote: THERES FUCKING BRACKETS User was temp banned for this post. There's fucking brackets. Or there are fucking brackets. TSK TSK! On April 08 2011 06:39 Kamais_Ookin wrote: I got 192... FML! .... | ||
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blomsterjohn
Norway464 Posts
Yeeah yeeeah my brain gets(it seems), just having abit issue with keeping my consciousness along  | ||
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ilbh
Brazil1606 Posts
the only way to get 2 as the answer is if it had another parenthesis like that: 48÷(2(9+3)) | ||
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GeneticToss
Canada188 Posts
Poll: What does being smart have to do with the OP? Protein Shake (25) Nothing (8) 33 total votes Your vote: What does being smart have to do with the OP? Ahh cmon and now they change the title T_T | ||
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han_han
United States205 Posts
To avoid any future division-related order of operation problems: 48 / 2 * (9 + 3) 48 * (1/2) * (12) Hey look they're all being multiplied so order of operations is now solved. Since multiplication of factors is commutative, we can multiply in any order we want now. You can choose between: 48 * 6 24 * 12 576 * (1/2) Personally for me 24 * 12 is the easiest there, but yes. Nice find. | ||
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lightrise
United States1355 Posts
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MasterOfChaos
Germany2896 Posts
Poll: How do you interpret "1/2x" ? 1/(2*x) (1980) (1/2)*x (990) 2970 total votes Your vote: How do you interpret "1/2x" ? + Show Spoiler + This one is interesting. Wolfram alpha interprets it as 1/(2*x), binding the omitted multiplication sign stronger to the variable x. But if you insist on left-to-right evaluation you get (1/2)*x. | ||
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Golgotha
Korea (South)8418 Posts
On April 08 2011 06:16 micronesia wrote: 48÷2(9+3) This is a mathematical expression that severs no purpose other than to test if you truly understand how order of operations work. Technically the answer is 288, but practically if you see this written 'in the field' "48/2(9+3)" odds are pretty good that they meant "48 / [2(9+3)]." This thread/poll serves little purpose other than to punish people who either A) don't remember their math or B) allow their experience with math rather than Pemdas lesson in primary/secondary school to dictate how they do math. It also is a place for people to go "haha look at that thread" :-/ I hate ambiguous mathematical expressions (whether it be because of technical ambiguity or laziness on the part of the person who wrote it) and hate this thread. I'm closing this dumb poll thread. If anyone still does not understand it you can pm me. If anyone uses this as an excuse to troll me I'll just revoke your pm privileges lol Chill Edit: Reopened. I don't see why you would close it, it's an interesting trick micronesia....you cant just go and randomly create brackets when that completely changes the given problem. There is nothing ambiguous about it. I am worried about our public education system now ^^ | ||
micronesia
United States24701 Posts
On April 08 2011 06:39 munchmunch wrote: How did this thread get reopened again? I thought micronesia's post summed it up perfectly. Also, the "What is your education and what is you result?" poll really should have options for, "I didn't vote because I thought it was ambiguous". Chill and I agreed to re-open it but we are changing the focus a bit... why is it that some people pick 2 and other people pick 288? It's not as simple as 'people who remember their math' and 'those who don't' | ||
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garbanzo
United States4046 Posts
On April 08 2011 06:40 MasterOfChaos wrote: + Show Spoiler + Umm...seeing that hurts my head. I would start looking for where that equation came from if I ever saw that in real life. | ||
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elmizzt
United States3309 Posts
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GiantEnemyCrab
Canada503 Posts
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munchmunch
Canada789 Posts
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Zealotdriver
United States1557 Posts
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micronesia
United States24701 Posts
On April 08 2011 06:41 Golgotha wrote: micronesia....you cant just go and randomly create brackets when that completely changes the given problem. There is nothing ambiguous about it. I am worried about our public education system now ^^ See this post: http://www.teamliquid.net/forum/viewmessage.php?topic_id=210235¤tpage=13#248 | ||
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JeeJee
Canada5652 Posts
On April 08 2011 06:41 Golgotha wrote: micronesia....you cant just go and randomly create brackets when that completely changes the given problem. There is nothing ambiguous about it. I am worried about our public education system now ^^ he's right the question in OP is technically 288, but technicalities are irrelevant what's 1/2x to you? if you say 288, you should also say 1/2x = x/2 and technically, yes, it's x/2 but really, it's 1/(2x) in real world that said, i'm sad that 2 is such a popular answer. people should be aware of tricks and make no assumptions and vote 288 ;( edit: lol sniped by micronesia | ||
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StarStruck
25339 Posts
On April 08 2011 06:33 MasterOfChaos wrote: An extended poll to find out if university courses have an influence on what people think on this question: Poll: What is your education and what is you result? 288 - And I'm studying/have studied science/math/engineering at university level (1174) 2 - And I'm studying/have studied science/math/engineering at university level (795) 288 - And I'm not studying/have not studied science/math/engineering at university level (759) 2 - And I'm not studying/have not studied science/math/engineering at university level (548) 3276 total votes Your vote: What is your education and what is you result? (Vote): 2 - And I'm studying/have studied science/math/engineering at university level Chill, can you add my poll to the OP so it gets a better data basis? You just had to re-open this thread. Didn't you? EDIT: It was Chill and micro. I think for now on, all contests that require you to do a skill testing question in order to win should use this question (not like they don't anyway!). Ha. On April 08 2011 06:41 Golgotha wrote: micronesia....you cant just go and randomly create brackets when that completely changes the given problem. There is nothing ambiguous about it. I am worried about our public education system now ^^ This and a million times over. To me, it's a simple math problem. You cannot just go on and create brackets because as Golgotha pointed out. It changes everything. | ||
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staplestf2
United States147 Posts
if you write it out or stop and think you get 288 | ||
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Divination
United States139 Posts
The rule is not PEMDAS, it is P E MD AS in other words: multiplication does not have priority over division. Rather, they have the same priority. Therefore if there is only multiplication and division remaining in the problem, the operation that is furthest to the LEFT is done first (left to right). So the answer is 2. | ||
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