# 6÷2(1+2)=?Watch

7 years ago
#41
Not another of these threads! It'll soon be in the "recycle bin" like the others.
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7 years ago
#42
(Original post by LimeTree.)
Thats where you went wrong.. 1+2 is 3, not 4 :P

Yeah I multiplied the brackets out wrong.

I did it like this

x(x+y)

x^2 + xy

I'm **** at maths.
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7 years ago
#43
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7 years ago
#44
brackets (rank 1 in bidmas) includes their expansion just as much as their function.

so it is 6/(2*(1+2))=6/2*3=6/6=1
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7 years ago
#45
I'd go for 1 everytime.

(Original post by paniking_and_not_revising)
WTF! I've just lost all faith in my mathematical abilities.

The answers I've gotten so far are 1 and 7.

6/2(1+2).
6/2 +4 (multiplied brackets out)
3+4
7

I've never liked maths
6/2 = 3
3 X 2 = 6, not 4.
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#46
Why are people being mean? I'm sorry I didn't realise this has been posted before, if'd known I wouldn't have posted it.

Also if it's been written badly on purpose and there is no correct answer, why do you have to start negative repping people...
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7 years ago
#47
27
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7 years ago
#48
6÷2(1+2) = 6÷2x(1+2)
>6÷2x3
>3x3
>9
Following the rule of BIDMAS, or even logic, it's 9

Sorted.
1
7 years ago
#49
Isn't it also written like:

6
___
2(1+2)

?
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7 years ago
#50
(Original post by Occlusal)
The answer is 1 but not because of some made up rule.
Then how did you get to 1?
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7 years ago
#51
(Original post by liviaaa)
Why are people being mean? I'm sorry I didn't realise this has been posted before, if'd known I wouldn't have posted it.

Also if it's been written badly on purpose and there is no correct answer, why do you have to start negative repping people...
There is a correct answer... It's 1.
0
7 years ago
#52
My calculator says 1 and calculators don't lie. if they do then I'll be ****ed in my summer maths exams.
0
7 years ago
#53
This is troll maths... sigh

Whoever designed this question
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7 years ago
#54
Maths always somehow destroys any chance of happiness in me.

I can't even get my head around this!!
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7 years ago
#55
Ok here is the full reasoning behind the answer being 1 :

Step 1

6/2(1+2) = 6/2(2+1)

step 2

6/2*1+2*2 = 7

6/2*2+2*1= 3.5

As you can see both thses answers are wrong as their syntax does not obey the laws of distributivity.

Hence, it is implied brackets are necessary around the 2(1+2)

This leaves the expression looking like this:-

6/(2(1+2)) = 6/6 = 1

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7 years ago
#56
(Original post by paniking_and_not_revising)
WTF! I've just lost all faith in my mathematical abilities.

The answers I've gotten so far are 1 and 7.

6/2(1+2).
6/2 +4 (multiplied brackets out)
3+4
7

I've never liked maths
1+2 doesn't equal 4. I think you're confused by the term 'multiplying out brackets, which applies when you have something of the form: (a+b)(c+d)

(1+2) in brackets is still just 1+2.
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7 years ago
#57
(Original post by ShayCamp)
Where did you get 4?!?!!!?!?!
They got 4 by multiplying out the brackets i.e.
6/2(1) + 2(2)
6/2 + 4

Although this is wrong because you're meant to add what's in the brackets first.
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7 years ago
#58
(Original post by liviaaa)
Why are people being mean? I'm sorry I didn't realise this has been posted before, if'd known I wouldn't have posted it.

Also if it's been written badly on purpose and there is no correct answer, why do you have to start negative repping people...
You could have searched for 10 seconds in the maths forum and found it

Also, since so many people don't understand how this question is trolling everyone people will just neg anyone who says the opposite answer to them.
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7 years ago
#59
9 imo

brackets = 6 / 2 ( 3 )

= 6 / 2 * 3

division = 3 * 3

multiplication 9

hope thats right
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7 years ago
#60

6÷2(1+2)=?

Using common sense... Basicly what the question is asking, is 6 divided by 2 lots of 1+2. Which is 6/6=1.

To use bodmas you must re-write it in fraction form. So 6/2(1+2). BODMAS tells you to expand the brackets first, this gives you 6/2+4 = 6/6 = 1.

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