This problem went viral in Japan after a study found 60 percent of 20 somethings could get the correct answer, down from a rate of 90 percent in the 1980s.
We knew it as BEDMAS, "Brackets" rather then "Parenthesis". Whatever you wanna call it...
I HATE those "skill testing questions" that are mandatory to win prizes around here. They tend to throw those math rules out the window. Had to call to clarify once -- they expect you to do the math in order from left to right for some stupid reason. So this question would go like this:
9 - 3 ÷ 1/3 + 1 = 6 ÷ 1/3 + 1 = 18 + 1 = 19
No, really. They did that. If they wanted to do that, they should have put each one on a separate line. Thus:
Take 9 Minus 3. divide by 1/3rd add 1.
So, yeah, "simple" skill testing questions don't work if the retards who write them don't know math.
We knew it as BEDMAS, "Brackets" rather then "Parenthesis". Whatever you wanna call it...
I HATE those "skill testing questions" that are mandatory to win prizes around here. They tend to throw those math rules out the window. Had to call to clarify once -- they expect you to do the math in order from left to right for some stupid reason. So this question would go like this:
9 - 3 ÷ 1/3 + 1 = 6 ÷ 1/3 + 1 = 18 + 1 = 19
No, really. They did that. If they wanted to do that, they should have put each one on a separate line. Thus:
Take 9 Minus 3. divide by 1/3rd add 1.
So, yeah, "simple" skill testing questions don't work if the retards who write them don't know math.
If you follow the order of function the answer is 1. First function in that equation would be dividing 3 by 1/3. This will leave you with this equation: 9-9+1=. It equals 1
For me the confusion was in writing 1/3 instead of the way ½ is written. While by itself there's not difference, one third is one divided by three. However, if it's treated as 1 divided by 3 instead of the fraction "one third" you do the division in order from left to right.
Then 3 ÷ 1/3 becomes 3 ÷1 ÷ 3, which is how I came up with "9" for my first answer in my post above.
[This message has been edited by Formula88 (edited 05-19-2016).]
If you follow the order of function the answer is 1. First function in that equation would be dividing 3 by 1/3. This will leave you with this equation: 9-9+1=. It equals 1
If you are using the pemdas order of operations wouldnt 9-9+1 be 9-10 and be equal to -1 instead of 1?
No, as they are... A and S are grouped so are preformed left to right when more than one function is present just as M and D are.. So I guess the better write up would be:
Parentheses Exponents Multiplication and Division ( "grouped set" in order they appear from left to right ). Addition and Subtraction ( "grouped set" in order they appear from left to right ).
So, say you have the problem 9 / 3 X 5=, You would do 9 / 3 or 3 resulting in 3 X 5= 15. You would not do 3 X 5= 15 resulting in 9 / 15= 0.6. Grouped sets are done in the order they appear. Math is all rules that have to be followed /sigh.
[This message has been edited by Khw (edited 05-19-2016).]
Hmm, I had a full head of hair before I started working on this...............
Someone owes me a toupee, at least till it grows back.............
------------------ Ron
Isn't it strange that after a bombing, everyone blames the bomber, his upbringing, his environment, his culture, his mental state but … after a shooting, the problem is the gun?
Definition of a home owner, "see the door threshold, without my permission, there and no futher.......
My Uncle Frank was a staunch Conservative and voted straight Republican until the day he died in Chicago. Since then he has voted Democrat. Shrug
3 divided by 1/3 is the same as 3 TIMES 3=9. 9-9 (=0) + 1=1
1 is the correct answer.
Showing off won't win you any prizes.
------------------ Ron
Isn't it strange that after a bombing, everyone blames the bomber, his upbringing, his environment, his culture, his mental state but … after a shooting, the problem is the gun?
Definition of a home owner, "see the door threshold, without my permission, there and no futher.......
My Uncle Frank was a staunch Conservative and voted straight Republican until the day he died in Chicago. Since then he has voted Democrat. Shrug
[This message has been edited by blackrams (edited 05-20-2016).]
It should. FWIW, it's the only math I can remember. You'd think, after 6 or 7 years of high school, I'd remember more.
You'd be one of the more talented ones but, know this. My survey indicates.......4 out of 3 people struggle with math.......
------------------ Ron
Isn't it strange that after a bombing, everyone blames the bomber, his upbringing, his environment, his culture, his mental state but … after a shooting, the problem is the gun?
Definition of a home owner, "see the door threshold, without my permission, there and no futher.......
My Uncle Frank was a staunch Conservative and voted straight Republican until the day he died in Chicago. Since then he has voted Democrat. Shrug
The answer should be 9. 9-3 * 1/3 +1= 9-(3 * 1/3) +1= 9-1+1=9
Going Left to right, you do the division and then you do everything else.
If you put the parenthesis around the first part, it would look like (9-3) *1/3 +1= (6) *1/3+1=
2+1=3
You are dividing by 1/3rd not taking one third of the total . So you'd have 6/1 divided by 1/3. Invert and multiply you'd have 6/1 X 3/1= 18/1 simplify to 18. So 6 divided by 1/3 is 18. Just as 3/1 divided by 1/3, invert and multiply 3/1 X 3/1=9/1 simplify 9. Basically, for ever 1 you have 3/3rds. Therefore 1 divided by 1/3rd is 3. It takes 3 1/3rds to make 1 so 1 divided by 1/3rd...
[This message has been edited by Khw (edited 05-20-2016).]
3 divided by 1/3 is the same as 3 TIMES 3=9. 9-9 (=0) + 1=1
1 is the correct answer.
True, but "1/3" isn't written in the equation as 0.33333, it's written as a 1 divided by 3. So why is "1/3" treated as a fraction rather than the expression 1 / 3?
Writing one third as "1/3" is what threw me off. If it had been properly written like this, I don't think I would have made the same mistake.
[This message has been edited by Formula88 (edited 05-20-2016).]
True, but "1/3" isn't written in the equation as 0.33333, it's written as a 1 divided by 3. So why is "1/3" treated as a fraction rather than the expression 1 / 3?
When helping others figure out how to look at such equations, once upon a time, I would draw in brackets, so they realized what they had to do first.
Besides which, however you write it, "1/3" = 0.33333333333333333333333333333333333333333333333333333333333333333333333333333333333.... since it goes on forever, it's a lot easier to write "1/3". You could also look at it like it was algebra, but instead of "A" being written there, it's "1/3"; it's a defined value that doesn't necessarily need to be written out.
Besides which, with more than one division, you have to start from the right... 3 / 1 / 3 <--- you have to divide the 1 by the second 3 before you can divide the first 3 by the quotient of the last two.
Or something like that. It's one of these things I take for granted and don't have to think about...kinda hard to put in to words.
Besides which, I said besides which twice already.
[This message has been edited by Stubby79 (edited 05-21-2016).]
Oh, yeah, lookie....forgot this about dividing by fractions:
Step 1. Turn the second fraction (the one you want to divide by) upside down (this is now a reciprocal).
Step 2. Multiply the first fraction by that reciprocal
Step 3. Simplify the fraction (if needed)
Thus:
code:
3 ÷ 1/3 is the same as :
3 1 --- ÷ --- 1 3
Which turns in to:
3 3 --- x --- 1 1
Therefore:
3 x 3 9 ------ = --- = 9 1 x 1 1
So: 9 - 9 + 1 = (Drum-roll, please!) 1.
(Edited to compact it)
quote
Originally posted by Khw: You are dividing by 1/3rd not taking one third of the total . So you'd have 6/1 divided by 1/3. Invert and multiply you'd have 6/1 X 3/1= 18/1 simplify to 18. So 6 divided by 1/3 is 18. Just as 3/1 divided by 1/3, invert and multiply 3/1 X 3/1=9/1 simplify 9. Basically, for ever 1 you have 3/3rds. Therefore 1 divided by 1/3rd is 3. It takes 3 1/3rds to make 1 so 1 divided by 1/3rd...
Edit: cuz I see someone else stated it already and deserves the credit.
[This message has been edited by Stubby79 (edited 05-21-2016).]
It is. But it's treated as its own equation. And then the division is supposed to be done before the addition and subtraction. So it could be written as 3/(1/3) which is the same as saying 3*3. Then you do the addition and subtraction from left to right and come up with 9-9+1 = 0+1 = 1.
If one sees a division sign and a slash in the same equation in text most will probably assume the / indicates a fraction but glancing at a question on a forum I'm sure more than a few will confuse the fraction written as it was for division sign shorthand.
Key: It's a matter of notation. ⅓ is a discrete quantity equivalent to (1 / 3) ... which is not the same as the expressions 1 / 3 (without enclosing parentheses) or 1 ÷ 3.
9 - 3 ÷ 1 / 3 + 1 = 9 - 3 ÷ 1 ÷ 3 + 1 is not the same as 9 - 3 ÷ ⅓ + 1
When in doubt, or when there might be ambiguity, always use parentheses:
9 - 3 ÷ ⅓ + 1 = 9 - (3 ÷ (1 ÷ 3)) + 1
[This message has been edited by Marvin McInnis (edited 05-22-2016).]
Key: It's a matter of notation. ⅓ is a discrete quantity equivalent to (1 / 3) ... which is not the same as the expressions 1 / 3 (without enclosing parentheses) or 1 ÷ 3.
9 - 3 ÷ 1 / 3 + 1 = 9 - 3 ÷ 1 ÷ 3 + 1 is not the same as 9 - 3 ÷ ⅓ + 1
When in doubt, or when there might be ambiguity, always use parentheses:
9 - 3 ÷ ⅓ + 1 = 9 - (3 ÷ (1 ÷ 3)) + 1
Technically you are definitely correct however I think my point was valid. If most people see a division symbol and a slash in the same equation as the example given most would assume the slash represents a fraction as most do not know how to type in a fraction as you did.
