
Can you solve this puzzle?
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Can you solve this puzzle?
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12
LikerLiker
13
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12
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2
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1
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30
1+1+1+1+11+1+1+1+11+1×0+1
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1
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12
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1
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Multiplication always takes precedence… So the 1×0 should be performed first… Which results in zero. Then you simply add all the other 1’s together.
The answer is 12
LikerLiker
What’s the default sign when there is no sign? Notice when the problem continues to the next line there’s no sign between the numbers.
LikerLiker
The answer depends on where you put the brackets, as these are not put here. Thinking about it – when there are no brackets, it’ll mean that the addition before the multiplication sign are in brackets. The correct answer is 1
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Roy Dahl It’s the other way around; without brackets, it’s multiplication before addition, so that one single «1 x 0» turns to a zero.
Adding the 12 ones to the one single 0 = 12The answer is 12Ah, damn it, there’s two 11’s hidden in there. That makes the answer 30
LikerLiker
ambiguous and therefore incorrect equation
parenthesis are needed
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paul davis It’s not ambiguous at all: http://www.mathgoodies.com/lessons/vol7/order_operations.html
Standard order of operators:
1. Parenthesis
2. Multiplication, then division, left to right
3. Addition, then subtraction, left to right
LikerLiker
the + signs are missing from the end of the first two lines which really invalidates the entire post
LikerLiker
the answer is
5
5
2
or
30
LikerLiker
Yeah, trick question! Optical trick not mathematical.
LikerLiker
The answer is 1 the way it’s written. Even if they’re 11s or have implied + signs after each break it would either be 12•0+1=1 or 30•0+1=1. The only way the answer could be different is if there were parentheses around the first 2 lines and then it would be 5+5+1=11. LikerLiker
What surprises me is how many people that answered forget that anything times 0 is 0.
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Nicholas Brickhouse and you forget that multiplication happens before addition.
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Sami Haahtinen
in order to do the multiplication you have to know what you’re multiplying hence the addition of the first numbers. It’s linearLikerLiker
Nicholas Brickhouse No, it isn’t linear. First multiplications, then additions. So it’s 1 x 0 = 0, then add all the 1’s and 11’s to the zero.
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1
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30
1 + 1 + 1 + 1 + 11
+ 1 + 1 + 1 + 11
+ (1 x 0)
+ 1
= 15 + 14 + 0 + 1 = 30
LikerLiker
Either 30 or 2 depending do you read it as one awkwardly broken line or as three separate ones in which case only the third one is counted.
LikerLiker
Do order of math first, which states you multiply first…..
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Lars M. Hansen you’re right, shows you how long it’s been since I was in school or had to use any math like this for that matter.
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the answer is 1
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I have to take back my answer of 12 because it looks like there were two «hidden» 11s in there… 😊
LikerLiker
Forget the 2 first lines. Cause it only says 1+1+1+1+1. Not 1+1+1+1+1+
That gives us this instead:
a+0a+a=2a
1+0+1=2
LikerLiker
1
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Lars Fosdal So far I like your answer the best.
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Gjermund Buset you can’t assume the first 2 lines are distractions because the field isn’t long enough for all the characters. One has to assume it’s a continuation based on available space.
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Nicholas Brickhouse While missing character + at the end of the first 2 lines, it could be like Lars Fosdal’s solution then. But I cannot see more correct alternatives.
LikerLiker
The Correct answer has to be =1
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