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4 X 4 + 4 X 4 + 4 - 4 X 4 =

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robbiebob | 00:51 Mon 07th Jan 2013 | Quizzes & Puzzles
25 Answers
There are arguments between two different answers!!

Does anybody know if the sum could have two answers or only one??

TIA
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Rich Text Editor, the_answer

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http://en.wikipedia.org/wiki/Order_of_operations
01:01 Mon 07th Jan 2013
20
my working out results in 320

i cannot see any other solution
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I got 20 too.. The other answer was 360.
320 if you do each individually and not in brackets. What's the 2nd, and how did you get 20 BF?
Question Author
I read it (4 x 4) + (4 x 4) + 4 - (4 x 4) =
If it were to be done with brackets would the brackets not be there?
^^ That is correct. Put it into Excel:

=4*4+4*4+4-4*4
exactly, shoota

no brackets .. hence my answer
Brackets aren't required.
At this rate you could be here all day, e.g.4 x (4+4) x (4+4) - (4x4), or (4x4+4) x (4+4-4) x4 etc. It's sooo wrong. 360 robbiebob??
There were no brackets in the original formula. If there were, they would have taken priority.

But there weren't. Simples!
I read it as 16 +16 + 4 -16 = 20
Always work out the multiplication first, brackets or no brackets.
Absolutely correct Lore
20?
It's definitely 20 using the standard rules for order of operations (usually referred to as BODMAS/BIDMAS or PEDMAS).
http://www.math.com/school/subject2/lessons/S2U1L2GL.html
Question Author
Anyone got Carol Vorderman's email??
In the absence of brackets I got 20.
I got 320.

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