This photo has been circling facebook and has led to some... erm... 'interesting' discussions.
Attachment:
427568_312052082175313_192122810834908_892480_893825620_n.jpg [ 16.05 KiB | Viewed 2163 times ]
What is your answer?
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| Author: | rsevs3 [ Feb 7th, '12, 22:36 ] |
| Post subject: | Maths question |
This photo has been circling facebook and has led to some... erm... 'interesting' discussions. Attachment: 427568_312052082175313_192122810834908_892480_893825620_n.jpg [ 16.05 KiB | Viewed 2163 times ] What is your answer? |
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| Author: | Ao+ [ Feb 7th, '12, 22:45 ] |
| Post subject: | Re: Maths question |
13 |
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| Author: | DuiNui [ Feb 7th, '12, 22:49 ] |
| Post subject: | Re: Maths question |
Yup, I'd go with 13 |
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| Author: | Merrick [ Feb 7th, '12, 22:50 ] |
| Post subject: | Re: Maths question |
0 |
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| Author: | rsevs3 [ Feb 7th, '12, 22:50 ] |
| Post subject: | Re: Maths question |
And it begins. 
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| Author: | RupertofOZ [ Feb 7th, '12, 22:59 ] |
| Post subject: | Re: Maths question |
Depends where you put the "brackets"... It could be 0, or 13... |
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| Author: | rsevs3 [ Feb 7th, '12, 23:12 ] |
| Post subject: | Re: Maths question |
what brackets? |
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| Author: | RupertofOZ [ Feb 7th, '12, 23:14 ] |
| Post subject: | Re: Maths question |
The brackets which define the order of operation... |
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| Author: | DuiNui [ Feb 7th, '12, 23:18 ] |
| Post subject: | Re: Maths question |
That's the point, there are no brackets. It's down to operator precedence. Each + is evaluated first, the last + 1 * 0 is evaluated as 0, as the * takes precedence over the + All the maths I've been taught and all compilers (that I have ever used) work this way. |
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| Author: | rsevs3 [ Feb 7th, '12, 23:18 ] |
| Post subject: | Re: Maths question |
There are no brackets Rup. There doesnt need to be any brackets to define the order of operation. You could add brackets that would change the order of operation and have the same result, but you could also change the result. |
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| Author: | rsevs3 [ Feb 7th, '12, 23:20 ] |
| Post subject: | Re: Maths question |
BIMDAS tells us that do the * operation first, then the + operations then the - operation. |
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| Author: | RupertofOZ [ Feb 7th, '12, 23:23 ] |
| Post subject: | Re: Maths question |
That's BODMAS... B - Brackets first O -Orders (ie Powers and Square Roots, etc.) DM - Division and Multiplication (left-to-right) AS - Addition and Subtraction (left-to-right) |
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| Author: | DuiNui [ Feb 7th, '12, 23:24 ] |
| Post subject: | Re: Maths question |
No it doesn't, it tells us to go left to right first, but with */ higher than +- |
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| Author: | DuiNui [ Feb 7th, '12, 23:27 ] |
| Post subject: | Re: Maths question |
VB and 4 ansi C compilers all say 13, that's good enough for me 
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| Author: | RupertofOZ [ Feb 7th, '12, 23:29 ] |
| Post subject: | Re: Maths question |
DuiNui wrote: the last + 1 * 0 is evaluated as 0, as the * takes precedence over the + But that's an assumed "bracket".... if you just process it left to right, without precedence... then the last operand is a multiplication of the sum (addition and subtraction) of all the numbers before hand... (in itself an assumed bracket)... multiplied by 0.... therefore the answer would be zero... |
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