[Closed] 2+2+2+2+2+2+2+2+2+2+2+2+2+2-2+2 x 0?

In maths, it is right or wrong, there are no grey areas. It is 26 and anyone who says it isn't is wrong, or just trying to be awkward for the sake of it.

Bless. You're really quite worked up by all this, aren't you?

You are of course wrong, but I respect your right to be. 🙂

Either write the sum down correctly to get your 26, or shut up and accept that it's 0.

END OF THREAD.

Just seen this thread.

[img] [/img]

I don't think I'm prepared to read any of it though, but going on the fact it's got to 4 pages, I'm assuming there is at least one person who knows nothing about maths and is refusing to believe they might be wrong, even when they are. And I find this slightly depressing.

Anyway, carry on.

I quickly learned that writing expressions that relied on remembering the precedence of this lot (see below) is doomed

Ah, good ol GSAUSTMDMASbSCbAbXbOlAlOCAC.

'm assuming there is at least one person who knows nothing about maths and is refusing to believe they might be wrong, even when they are.

Yep, I think he posted just before you 😀

Hold on Graham... was that the answer in base 26?

[b]Either write the sum down correctly to get your 26, or shut up and accept that it's 0.[/b]

Ooh there he is again.

Elfin.. just believe your Mac.. after all, it can do no wrong.. ;o)

Some old calcs did BOMDAS rather than BODMAS, but otherwise it always has been and always will be 26, regardless of spaces which are [url= http://en.wikipedia.org/wiki/Whitespace_character ]whitespace[/url] in maths.

There's no harm in being wrong, so long as you learn from it.

Hold on Graham... was that the answer in base 26?

Dinnae be daft, in base 26 the answer is 10

It's "you're wrong", as in "you are wrong". Just pointing it out while we're bashing people for lacking a grasp of GCSE level concepts.

If you follow the sum step by step by step, you end up at the end with 28x0 at the end.

What is 28x0?

[b]Either write the sum down correctly to get your 26, or shut up and accept that it's 0.[/b]

Don't just make up imaginary non-existent brackets to try to prove your wrongness.

[img] [/img]

Why? Why can't I resist?

Under the rules of bidmas/bodmas, which is an internationally, universally, accepted system of the rules of how mathematical symbols should be understood, this

2+2+2+2+2+2+2+2+2+2+2+2+2+2-2+2 x 0

is the same as

2+2+2+2+2+2+2+2+2+2+2+2+2+2-2+(2x0)

and we can cancel out a little bit as there's a minus, and as (2x0)=0 we can cancel that too..

2+2+2+2+2+2+2+2+2+2+2+2+2=26

anything else is illogical and wrong, and arguing otherwise would make you either incredibly ignorant and/or a troll.

From Matlab 7.12.0 R2011a

>> 2+2+2+2+2+2+2+2+2+2+2+2+2+2-2+2*0

ans =

26

From wolfram alpha

http://www.wolframalpha.com/input/?i=2%2B2%2B2%2B2%2B2%2B2%2B2%2B2%2B2%2B2%2B2%2B2%2B2%2B2-2%2B2+x+0

Put it in a calculator if you're still doubtful.

The MD/DM and AS/SA bits are a bit of a funny in this anyway...

For multiplication and division, they are actually of equal precedence (essentially being the same operation), as are subtraction and addition (snap), and so those are evaluated from left to right.

Everyone who said 26 should wear these so as to distingish themselves from less able people...

[img] [/img]

Sometimes being right, just isn't right.

arguing otherwise would make you either incredibly ignorant and/or a troll.

or both

If you [s]follow the sum step by step by step[/s][i]ignore the fundamental rules of operator order[/i], you end up at the end with 28x0 at the end. [i]Which is wrong[/i]

FTFY

2+2+2+2+2+2+2+2+2+2+2+2+2+2-2+2 x 0

is the same as

2+2+2+2+2+2+2+2+2+2+2+2+2+2-2+(2x0)

It's not. It's a different sum. Think about it.

[b]Either write the sum down correctly to get your 26, or shut up and accept that it's 0.[/b]

So, you're arguing then, if you follow the sum [b]as written[/b], and do each stage [b]according to the order it's written down[/b], that the answer is anything other than zero?

See, when you put the brackets in, it makes sense. Without them, it's only logical to do it stage by stage in the order it is written.

Don't give it with all the 'ooh I'm clever with maths' rubbish, cos that's cobblers. Read it. Readi it again. Do the sum in the order it's written, without any imaginary brackets.

It's 0, isn't it? 😉

anything else is illogical and wrong, and arguing otherwise would make you either incredibly ignorant and/or a troll.

I just put it down to you being young, arrogant and a nerd. 😉

'Fundamental rules' my arse.

ps. can I just point out (again) that this has nothing to do with mathematics, but convention while doing sums.

The MD/DM and AS/SA bits are a bit of a funny in this anyway...

For multiplication and division, they are actually of equal precedence (essentially being the same operation), as are subtraction and addition (snap), and so those are evaluated from left to right.

Yep, the various sites I linked to make that clear. It's just a handy mnemonic to help kids.

They tend to say PEMDAS because they use the mnemonic Please Excuse My Dear Aunt Sally

I guess likewise BODMAS is more memorable than BOMDSA but both are correct.

If you follow the sum step by step by step, you end up at the end with 28x0 at the end.

But that's not how maths is done (correctly). But never mind, you refuse to learn.

The problem with BODMAS/BOMDAS is that while the operations are essentially equal priority, when thrown into calculators without thought they yield different answers.

Elfin... does this mean that your Mac is *gasp* wrong?

[img] http://www.terrariaonline.com/attachments/cant-tell-if-stupid-or-trolling-jpg.6665/ [/img]

Actually, IDC. I'm out.

'Fundamental rules' my arse.

Are the bits of maths that are generally taught at primary school or GCSE level not fundamental?

But that's not how maths is done (correctly)

Yes it is.

Or should I say....

Yes (it is).

glenh... well, as it's only convention, then it doesn't make any difference then, just as I think I'll start using j instead of i for all my complex numbers...

Oh, hold on.. ;o)

Don't give it with all the 'ooh I'm clever with maths' rubbish, cos that's cobblers. Read it. Readi it again. Do the sum in the order it's written, without any imaginary brackets.

As it's written, the answer is 26. You clearly can't read it correctly. 🙂

Edit - D'oh, double post.

'Fundamental rules' my arse.
Are the bits of maths that are generally taught at primary school or GCSE level not fundamental?

In this case, no; because as per the second part of my post, the choice of order of operations in the notation you choose to write an equation in is not mathematics.

Okay Elf.

In my pocket I have 6 pound coins, five 10ps, two 5ps, one 2p and no 1ps.

So that's

6 x 100 + 5 x 10 + 2 x 5 + 1 x 2 + 0 x 1

Yes?

So doing that in the order it is written down, left-to-right as you insist on doing, I make that just over six hundred quid. Yay I'm rich! 😀

glenh... well, as it's only convention, then it doesn't make any difference then, just as I think I'll start using j instead of i for all my complex numbers...

Oh, hold on.. ;o)

Well, everyone knows electronics peeps are a bit funny. 😉

coffeeking - Member

If you follow the sum step by step by step, you end up at the end with 28x0 at the end.

But that's not how maths is done (correctly). But never mind, you refuse to learn.

if [u]fundamental[/u] is suddenly seen as being correct all the time, does that now mean that fundamental religious nutters are also correct?

see all you fundamentalists are all barking mad! made up invisible brackets, made up invisible friends in the sky, creationism, it's all the bloomin same. FREAKS the lot you.

*wanders off to don tin foil hat and wait for the end*

well, as it's only convention, then it doesn't make any difference then, just as I think I'll start using j instead of i for all my complex numbers...

Oh, hold on.. ;o)

see all you fundamentalists are all barking mad! made up invisible brackets, made up invisible friends in the sky, creationism, it's all the bloomin same. FREAKS the lot you.

There are NO "invisible brackets". That is just a good way to unambiguously explain the order, because for some reason even the naysayers accept that the bits in brackets need to be done first.

glenh... tease! 😉

andrewh... maybe the subtlety was lost there...

What I was getting at is that mathematics is nothing without convention. You can clearly do what the hell you like personally, but unless you can convey that meaning to others then that meaning is lost.

So, in that sense, convention is everything.

😀

elfin

Do you live under a bridge and terrorise the billy goats gruff?

Seriously, this is basic maths rules that were taught to me at primary school nearly 20 years ago.

maths is right or wrong. If it wasn't a lot more things you rely on wouldn't work.

she'll know [img] [/img] 🙂

Thanks for the money example Graham it makes sense now.

funkynic,

that's what i meant, only you managed to say it properly!

Blimey.. maybe this Talisker is making me talk sense for once!

maths is right or wrong

go on then solve the Birch and Swinnerton-Dyer conjecture 😆

elfin

Do you live under a bridge and terrorise the billy goats gruff?

Seriously, this is basic maths rules that were taught to me at primary school nearly 20 years ago.

maths is right or wrong. If it wasn't a lot more things you rely on wouldn't work.

Christ this is embarrassing for mtbers.

There are rules for maths. Simple rules for the 2+2*2 stuff. If you didnt turn up that day at school - then try and relearn.

I'm afraid I have an A* in GCSE maths from 1995 and would have said 0 while vaguely suspecting a trick. I'm a tax lawyer, so it doesn't matter these days.

When I write sums I use an awful lot of brackets, many possibly not strictly needed. I am glad the kids learn these things, but gladder that grown-ups who do maths know them. 🙂

6 x 100 + 5 x 10 + 2 x 5 + 1 x 2 + 0 x 1

So doing that in the order it is written down, left-to-right as you insist on doing, I make that just over six hundred quid. Yay I'm rich!

I get £60,522. I am [i]considerably[/i] richer than yaw! As well as being better at maths, obviously. 😉

[img] [/img]

I can't belive I'm explaining primary school maths to a grown man in terms of cats!

You're not. You're just confuddling yourself with some meaningless completely irrelevant guff about going on holiday and cat welfare. 🙄