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jason-dodd
22 Mar 12 19:52
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Date Joined: 17 Sep 10
| Topic/replies: 6,788 | Blogger: jason-dodd's blog
This has worked well elsewhere, so let's share it here.

Post your answer and reasoning...
Pause Switch to Standard View Maths quiz: 5 + 5 + 5 - 5 + 5 + 5 - 5...
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Report everythings gone green March 22, 2012 6:55 PM GMT
0
Report ilikewavingatbuses March 22, 2012 6:56 PM GMT
BINGO!
Report ilikewavingatbuses March 22, 2012 6:57 PM GMT
Report jason-dodd March 22, 2012 6:58 PM GMT
Laugh
Report twomatchpoints March 22, 2012 7:01 PM GMT
42
Report mange March 22, 2012 7:03 PM GMT
5.......................dont tell anyone else Cool
Report Brother Mouzone March 22, 2012 7:04 PM GMT
What do I need to type into my calculator so it says BOOBIES if I turn it upside down iyo?
Report MisterBadger March 22, 2012 7:11 PM GMT
totally meaningless without brackets imo
Report jason-dodd March 22, 2012 7:20 PM GMT
meaningless?

It's a sum. Sums don't require brackets to be valid.
Report Cricketer March 22, 2012 7:29 PM GMT
15

BODMAS rules

Acronym, Definition. BODMAS, Brackets Order Division Multiply Add Subtract (mnemonic for order in which mathematical calculations are done
Report V4 Vendetta March 22, 2012 8:26 PM GMT
Is this in base 10?
Report waynebrayn March 22, 2012 8:27 PM GMT
Please refer to my previous answer on the football forum
Report Cricketer March 22, 2012 8:43 PM GMT
its 15 and i will bet anyone a million zillion pounds sterling.
Report Journeyman March 22, 2012 9:06 PM GMT
1. If you do it on a standard calculator it is zero. (Scientific mode doesn't count)

2. A calculator is a machine.

3. A machine can do counting stuff faster and more accurately than all people.

4. Therefore it is zero.
Report i_agree_with_nick March 22, 2012 9:11 PM GMT
Zero

Can't really give any reasoning other than it's a sum and the answer is 0.

Is that the right answer?
Report i_agree_with_nick March 22, 2012 9:13 PM GMT
ok maybe the answer is 15
Report Journeyman March 22, 2012 9:15 PM GMT
^
You cheated
Report morpteh mackem March 22, 2012 9:19 PM GMT
robert earnshaw
Report V4 Vendetta March 22, 2012 9:27 PM GMT
How about this one:

Int[x/Sin(x)] from 0 to sqrt(13).

Any ideas?
Report twomatchpoints March 22, 2012 10:55 PM GMT
42

again
Report ooO{Alpha Centauri}Ooo March 22, 2012 11:07 PM GMT
any number X 0 = 0
Report timcaznat March 23, 2012 12:07 AM GMT
BODMASS

=> 15
Report timcaznat March 23, 2012 12:07 AM GMT
BODMAS ffs
Report kincsem March 23, 2012 1:47 AM GMT
15
no brackets
Report erse2 March 23, 2012 2:17 AM GMT
agreed on the BODMAS (the brackets would be merely indicative)

5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0 = ?

0 x 5... 0
5 + 5 + 5 - 5 + 5 + 5 - 5 ... 15
Report jason-dodd March 23, 2012 9:55 AM GMT
The chit chat forum has performed better than the football forum imo Happy
Report Back High Lay Low March 23, 2012 10:01 AM GMT
I was taught PEMDAS instead of BODMAS, answer still 15 though.
Report dunlaying March 23, 2012 12:56 PM GMT
15 is it.
Report Ampleforth March 23, 2012 2:09 PM GMT
I have to say, this has totally freaked me out, I use my windows calculator (in scientific view) to calculate loadings and pressures for my engineering design work!
In scientific view it comes out 15, in normal view it comes out 0.
I am now concerned about how many projects over the years have been over or under engineered Scareddue to this bollo x.  Seriously, wish i hadnt read this thread Plain
Report screaming from beneaththewaves March 23, 2012 3:21 PM GMT
I remember this issue arising in the mid-70s when pocket calculators first entered general use. Obviously they weren't allowed in classrooms, and one maths teacher used to use this kind of example, whereby the answer is given as 0 instead of the correct 15, as a reason why they never would be.Sad
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