Separate names with a comma.
Discussion in 'Community Discussion' started by Mac'nCheese, Nov 9, 2011.
Its on facebook....
What does 5+5+5-5+5+5-5+5*0=
20, 0, 40 or 15?
Did anyone else read that as all addition the first time they saw it? @_@
Anyway, I'd assume 15.
15 I think. Most will say 0 because of the multiplication by zero but I think it goes:
5+5+5-5+5+5-5+(5*0)= and that is 15.
BIDMAS-standard maths principles lol
I get 15
Please Excuse My Dear Aunt Sally
"What do you want it to equal?" - Sleazy Accountant
Hate order of operations, gets me every time.
Oops... made a mistake
I knew the meaning, but now I see the math behind it. Cool.
PMDAS order of operations, Parentheses, Multiplication, Division, Addition, Subtraction
Grouping terms according to order of operations reduces to
Probably wrong, and probably another one of these useless puzzles where everyone is wrong usually on accounta the way it's entered into the computer in type format and not common sense format...pretty sure the last time one of these came up the guy did a bogus job of entering it into the computer
But that is arbitrary term grouping where you are selecting which operation signs to put in or outside of the parentheses, which is no good.
Dang it... It is 15 but I have already voted.
And now you know why macaroni & cheese made it a public poll.
Damn delexia after I put my vote in I saw I was reading one of the 5 twice and was getting it crossed. It should be 15.
Has anyone with a 4S asked Siri?
Wrong, because YOU put in parentheses.
And multiplication=division and addition=subtraction...neither is done first. You do these from left to right.
That is incorrect. You do not put () in at all in this case as () fundamentally changes the oder of operations. Addition and Subtraction are the same. Neither takes precedence over the other. Same with Mult and Division. As such, you merely go Left to Right with those operations
The reason addition and subtraction are the same is because adding -5 is the same as subtracting 5 for instance. Same logic for mult and division
I voted 15 because that makes sense using PEMDAS and working left to right. Does left to right come into play with calculations? I don't know, grade school math was so long ago. However, puma1552's post below makes sense as well depending upon how you apply PEMDAS if it's not left to right. I don't remember the rule.
Thanks duke, been a long time...had I seen it scribbled on paper I would've went left to right, but since it's on the computer you always assume it's a setup/trick and not as easy as it would otherwise look.
Any multiplied by 0 is 0.
That's why the LAST 5 zeroes out, not everything before the "+"
15. Can't see what else it could be!