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What is 1+2x3?

Nick Atkins is off-lineGold Member
20 July 2013 10:16
NATKINS
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NATKINS
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Quote from Andy_B
no




Any explanation as to why I fell short of your approval?

Always willing to admit I'm an idiot...

Nick
I've taken a vow of poverty - if you really want to annoy me, send money.


Andy_B is off-lineSilver Member
20 July 2013 10:19
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Quote from NATKINS
Any explanation as to why I fell short of your approval?

Always willing to admit I'm an idiot...

Nick



While (1+2)x3 is always 9
and
1+(2x3) is always 7

1+2x3 is always 7 and never 9.


Mantisphoto is off-lineSilver Member
20 July 2013 12:49
mantisphoto
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Using a script calculator app on my android tablet... this is the answer!!!!! :P


Will is off-line
21 July 2013 05:17
Photoimager
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I thought these tiresome things only appeared on US based sites.

Yes BIDMAS ( to be National Curriculum correct, it used to be BODMAS, USA uses PEDMAS etc ) is one decider.

However, as well as 7 the answer can also be 11, 12 and 13. By the same token 1 + 1 can equal 10.

Now for the real confusion about some mathematics I learned whilst at Primary school but has never been in GCSE but was in the older O-level.
Where there's a Will, there's a way.


seanb is off-lineGold Member
21 July 2013 05:22
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Quote from Photoimager
By the same token 1 + 1 can equal 10.



There are 10 types of people. Those who understand binary and those who don't.


http://www.seanbphotography.co.uk


21 July 2013 05:39
Socialdisaster
Photographer


It's 7, but any sensible learning aid (human or book) would have put brackets round the 2x3.
Modesty is just arrogance in stealth mode


Will is off-line
21 July 2013 08:17
Photoimager
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Stoke-on-Trent

Quote from Socialdisaster..  but any sensible learning aid (human or book) would have put brackets round the 2x3.



Nope, brackets are not required. If you fully understand brackets then BIDMAS would also be understood making the brackets redundant. KISS principal.

Where there's a Will, there's a way.


Neil Anderson is off-line
21 July 2013 09:49
stolenfaces
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Quote from Photoimager
Nope, brackets are not required. If you fully understand brackets then BIDMAS would also be understood making the brackets redundant. KISS principal.






Clearly that's not true. Brackets clarify the expression, they are much more easily understood than the precedence of operators.
In the real world the meaning of the expression would generally be clearer
E.g I have one pound and can save 3 ponds a week so in two weeks time I will have 1 + (2x3) = £7
Or each week mum gives me £1 and dad gives me £2 so in 3 weeks I will have (1+2) x 3 = £9.
Like any dealer he was watching for the card that is so high and wild he'll never need to deal another...


Qu is off-line
21 July 2013 11:35
hhoa
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hhoa
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London

1 + 2 x 3 = 7 due to the order of operations in mathematics as i learnt at school.
1 + 2 x 3 should be the same as 1 + (2 x 3). Brackets should be unnecessary.


Nick Atkins is off-lineGold Member
21 July 2013 12:04
NATKINS
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NATKINS
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United Kingdom
Oxfordshire


Quote from Andy_B
While (1+2)x3 is always 9
and
1+(2x3) is always 7

1+2x3 is always 7 and never 9.



I hear what you're saying, but apparently a basic calculator and Nokia are wrong too...

cf. 'On my basic calculator, the answer is 9. On my Nokia phone in Portrait it is also 9'

Oh well, there goes my education - good job I'm a photographer...

Nick
I've taken a vow of poverty - if you really want to annoy me, send money.



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