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View Poll Results: 48÷2(9+3) | |
2
|     | 217 | 59.62% | |
288
|    | 147 | 40.38% |
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04-12-2011, 12:06 PM
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#76 | | Banned (ABWS)
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04-12-2011, 12:20 PM
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#77 | | Zombie Mod
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Originally Posted by T.T  it's ambiguous because when someone asks you to interpret 1/2x you don't know whether they mean (1/2)x or 1/(2x). 9 times out of 10 they mean 1/(2x) because the 2 and the x are implied to be together and they are either lazy (bastards!) or don't know how to use brackets to avoid confusion.
I'm not saying interpreting it as 1/(2x) is 'correct'. The first thing I would do is get them to clarify if they mean
(1/2)x or
1/(2x)
that's the proper way to type out the equation to avoid confusion. | I can understand the need for clarification once you start having to solve for 'x', but you kinda lost me on the ambiguity of this thread's particular equation. Though poorly written, it's written in a way that is solvable with conventional means. There's not really any other way to approach it differently, if a person knows the rules.
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04-12-2011, 12:23 PM
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#78 | | I *heart* Revscene.net very Muchie
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rofl at all these debates. Those who have done enough math will naturally think it's 48/2(9+3) and get 2. Those who got numbers other than 2, no amount of explanations will help you.
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04-12-2011, 12:29 PM
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#79 | | Even when im right, revscene.net is still right!
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LOL at 68 votes for 2, and how Presto is just repeating the same thing over and over.
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04-12-2011, 12:37 PM
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#80 | | I *Fwap* *Fwap* *Fwap* to RS
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^ we can't fail Mod anyway ... Quote:
Originally Posted by Great68 Typed verbatim into my Sharp scientific calculator, It gets 2. | 
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04-12-2011, 12:42 PM
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#81 | | Willing to sell a family member for a few minutes on RS
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everyone here at work including myself say the answer is 288
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04-12-2011, 12:44 PM
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#82 | | Zombie Mod
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Fuck your calculators. 
Solve it like a child in the 80s. Why don't one of you 71 savants walk me through how you came to the answer of 2?
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04-12-2011, 12:54 PM
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#83 | | Willing to sell body for a few minutes on RS
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Wow with the way Presto is going on about this you'd think we're pissing on his Doctorate of Mathematics paper.
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04-12-2011, 12:57 PM
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#84 | | Ubereem Mod
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THIS THREAD IS EPIC.
Time to ask a bunch of my staff what they get.
Got some Accutaries here. LOL this should be epic.
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04-12-2011, 12:59 PM
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#85 | | I answer every Emotion with an emoticon
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48÷2(9+3)
is the same as:
48 ÷ 2 x (9+3)
So:
48 ÷ 2 x 12
24 x 12
288
Yeah?
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Originally Posted by MajinHurricane who would ban me? lol. Look at my post count. | | |
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04-12-2011, 01:05 PM
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#86 | | :inoutugh:
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48÷2(9+3) = 42
/thread
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04-12-2011, 01:20 PM
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#87 | | I answer every Emotion with an emoticon
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Originally Posted by TOS'd 48÷2(9+3) = 42
/thread | The answer is right, but what is the question? 
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Originally Posted by MajinHurricane who would ban me? lol. Look at my post count. | | |
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04-12-2011, 01:22 PM
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#88 | | I WANT MY 10 YEARS BACK FROM RS.net!
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Originally Posted by Presto Why don't one of you 71 savants walk me through how you came to the answer of 2? | it was posted many times on page one and two. Like i said if you break it down into numerator and denominator you can see why the answer is two.
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04-12-2011, 01:47 PM
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#89 | | Banned (ABWS)
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Originally Posted by Presto Sorry, how is the equation ambiguous? I really don't see how this can be. Is BEDMAS invalidated now that people are plugging numbers into the calculator? What rule are people using to come to the answer 2? | I wish we could fail mods, especially ones on a power trip. Thankfully, there's at least one member on here that gets it: Quote: |
Originally Posted by T.T it's ambiguous because when someone asks you to interpret 1/2x you don't know whether they mean (1/2)x or 1/(2x). 9 times out of 10 they mean 1/(2x) because the 2 and the x are implied to be together (kinda like the 2(9+3) here) and they are either lazy (bastards!) or don't know how to use brackets to avoid confusion.
I'm not saying interpreting it as 1/(2x) is 'correct'. The first thing I would do is get them to clarify if they mean
(1/2)x or
1/(2x)
that's the proper way to type out the equation to avoid confusion. | Its funny, even with this, some people don't get it: Quote: |
Originally Posted by Presto I can understand the need for clarification once you start having to solve for 'x', but you kinda lost me on the ambiguity of this thread's particular equation. Though poorly written, it's written in a way that is solvable with conventional means. There's not really any other way to approach it differently, if a person knows the rules. | I'll try and break it down into more simple terms for you:
Do you know what a unary operation is? Its an operation with only 1 operand. ie: -3
So what's the outcome of this?
-3^2
it could be:
-(3^2) = -9
(-3)^2 = 9
Cause BEDMAS does not apply to unary operators.
Notice how this equation is missing an operand between the "2" and the "(". We can assume this is an unary operand, in which case it could be expanded to either:
48 / [2 * (9+3)] = 2
48 / (2) * (9+3) = 288
Usually unary operands get evaluated first, anyone who develops software knows this cause "++" is a unary operand. Thus why some calculators are returning the answer as 2.
There's your math lesson for the day.
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04-12-2011, 01:52 PM
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#90 | | Zombie Mod
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^^^
Why assume anything? As soon as you have to throw in shit like unary to make it work, then you've already missed the point. Solve it like it's presented. Don't assume anything other than what is there. With the information that's presented (the equation), it's solvable by anyone with a grade school education.
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04-12-2011, 01:54 PM
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#91 | | resident Oil Guru
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Originally Posted by TOS'd 48÷2(9+3) = 42
/thread | Quoted, to immortalize your stupidity... | |
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04-12-2011, 01:57 PM
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#92 | | HELP ME PLS!!!
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Originally Posted by LiquidTurbo Quoted, to immortalize your stupidity... |
... you just Timpo'd ... you just don't get it.
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04-12-2011, 01:58 PM
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#93 | | xxx
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SpuGen = laughing his ass off right now
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04-12-2011, 02:00 PM
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#94 | | Banned (ABWS)
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Originally Posted by Presto ^^^
Why assume anything? As soon as you have to throw in shit like unary to make it work, then you've already missed the point. Solve it like it's presented. Don't assume anything other than what is there. With the information that's presented (the equation), it's solvable by anyone with a grade school education. | You cannot solve it as presented. You are assuming "2(" expands to "2 * (" since there is no rule for a bracket being an operator.
I understand where you're coming from, cause yes it is solvable by anyone with JUST a grade school education of BEDMAS. I have 4 years of university math, in particular physics and electronics math that is only solvable with assumptions. Thus my eye is more critical than the simple mind of a grade schooler who is going to assume "2(" expands to "2 * (".
As I pointed out, even my development environment is smart enough to warn me the equation is ambiguous - which is a far cry from grade school math.
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04-12-2011, 02:03 PM
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#95 | | ...in the world.
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04-12-2011, 02:05 PM
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#96 | | Banned (ABWS)
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Presto, no hard feelings. This is just the "plane on a conveyor belt" question all over again. We can debate this till the end of time - it all comes down to what assumptions you make.
My 4th year electronics prof never cared if we got the same answer as he did, he cared that we could justify our assumptions getting to our answer.
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04-12-2011, 02:21 PM
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#97 | | Zombie Mod
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No problem. You mention that there is no rule for bracket being an operator. I've always understood that no operator between the number and bracket means multiplication. Is that where the ambiguity comes from? Due to language of the software?
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04-12-2011, 02:29 PM
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#98 | | Rs has made me the woman i am today!
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I always assumed that meant multiplication. Posted via RS Mobile | |
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04-12-2011, 02:40 PM
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#99 | | Banned (ABWS)
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Originally Posted by Presto I've always understood that no operator between the number and bracket means multiplication. Is that where the ambiguity comes from? | 
That's exactly where the ambiguity comes from. We can solve the ambiguity by figuring out where your understanding comes from. I couldn't find a hard rule about a bracket being a multiply operator - yet if you can, then no more ambiguity.  Yet until you do, your understanding is actually an assumption.  | |
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04-12-2011, 02:47 PM
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#100 | | I *heart* Revscene.net very Muchie
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math sux
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