Poll: 6÷2(1+2)
- Thread starter Barks
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There may be some correlation between the two, but you can't assume it.
bi(dm)(as)
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I was joking in my own odd sort of way, as if asimwhatever was imagining those voting '1' as number-crunching Rainmen or something... which of course is giving him far too much credit.
And it seems Gangster still isn't getting 'it'... and by 'it' I mean actually mentally processing what various others have written almost countless times prior to his 'summary'.
Yes... you enter the brackets first and perform the operation within them.
guyfawkes I get it - and if you see my post you will see that I stated the two possible ways of looking at it. The question is not the 2nd 'state' I mention, thus the answer is 9.
People may have looked at it and thought that... but its wrong and the correct is 9.
I get it all right.
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Without any symbols, it's utterly ambiguous. The bracketing is inconsistent and there's no multiplication sign. It's badly written specifically to generate arguments like this one.
Your version requires you to assume that the 6/2 is bracketed before you multiply out the (1+2), but that's no more valid than assuming that the 2(1+2) is bracketed, given the inconsistent manner in which the thing is written under your rules.
If they wanted it to mean (6/2)*(2+1) then the first part should be bracketed, given that they've gone to the trouble of bracketing the second half.
The question is a troll.
legitimately expand 3(2+1) and you'd arrive at the correct answer
The question is simply over the use of the forward slash '/' to represent division
the divisor isn't *everything* to the right of the '/' rather its just the 2
In order to write the equation as you're thinking of it you'd need to add another set of parenthesis in order for everything to the right of the '/' to be the divisor
As per the links earlier
without parenthesis you get:
http://www.wolframalpha.com/input/?i=6/2(1+2)
with parenthesis you get:
http://www.wolframalpha.com/input/?i=6/(2(1+2))
That is odd, however, I've never heard of
Afaik they're equal, but the calculators I've tried automatically make :
6/2(1+2) = (6 / 2) * (1 + 2) = 9
Why does one calculator do the one and the other does it differently ?
So far:
TI, Google
vs
Apple, Casio
The calculator stances on this.
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My calculator is a casio fx 9860G SD
which is (was?) one of the best graphical calculators you can (could?) buy.
Eric's collar
Eric's collar
This is maths not poetry, there only can be one answer.
It's not ambiguous. My understanding of BODMAS is where there is equality you go left to right. Here the division and multiplication rank equally. Therefore leftmost operator takes precedence. Therefore, according to those rules, you divide before you multiply in this equation.
Soldato
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Odd, edited...
What I was taught at school was :
6 / 2 * (1 + 2)
is the computer way to write
6
_ X (1+2)
2
So essentially (6 / 2) * (1 + 2) = 9...
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You have added in an extra '*' there.
Soldato
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Soldato
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no i didnt, excel did it automatically
Maybe my GCSE maths got left a bit behind once I got to uni...
At the end of the day, none of the post-GCSE maths I have done has suffered because of this sort of nonsense, so I'm not bothered if I'd drop a mark on a GCSE paper.
