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Old 04-29-2011, 01:04 PM   #1 (permalink)
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Default 6/2*(1+2)=?
I've seen some debate about what the answer is to this, and its a chance for all of you to flex your mathematics muscles. Is the answer 9 or is it 1?

Getting 9 is a case of doing 6/2=3 * 1+2=3 therefore 3*3=9.

Getting 1 is a case of doing 2*(1+2)=6 and it becoming 6/6=1.

I say the answer is 9. Which would you say is right, and why? GO!!!
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Old 04-29-2011, 01:08 PM   #2 (permalink)
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You're always taught to do whats in paranthesis first.
After that you multiply or divide from left to right.

So...

6/2*(1+2)=?

Parenthesis -
6/2*(3)

Divide -
6/2 = 3

Multiply -
3*3 = 9
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Old 04-29-2011, 01:11 PM   #3 (permalink)
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Quote:
Originally Posted by EvilChuck View Post
I've seen some debate about what the answer is to this, and its a chance for all of you to flex your mathematics muscles. Is the answer 9 or is it 1?

Getting 9 is a case of doing 6/2=3 * 1+2=3 therefore 3*3=9.

Getting 1 is a case of doing 2*(1+2)=6 and it becoming 6/6=1.

I say the answer is 9. Which would you say is right, and why? GO!!!
The answer is 9 you are correct.
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Old 04-29-2011, 01:24 PM   #4 (permalink)
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6/2*(1+2) = 6/2*(3) = 6/6 = 1

Parentheses
Exponents (and Roots)
Multiplication
Division
Addition
Subtraction

This is like sixth grade math guys, seriously.

Mathematical Order Of Operations
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Old 04-29-2011, 01:41 PM   #5 (permalink)
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Quote:
Originally Posted by oojay View Post
6/2*(1+2) = 6/2*(3) = 6/6 = 1

Parentheses
Exponents (and Roots)
Multiplication
Division
Addition
Subtraction

This is like sixth grade math guys, seriously.

Mathematical Order Of Operations
Lol @ "this is like sixth grade math guys, seriously" and then you got it wrong.

Multiplication and Division are interchangeable.
Just like addition and subtraction.
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Old 04-29-2011, 03:26 PM   #6 (permalink)
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Quote:
Originally Posted by oojay View Post
6/2*(1+2) = 6/2*(3) = 6/6 = 1

Parentheses
Exponents (and Roots)
Multiplication
Division
Addition
Subtraction

This is like sixth grade math guys, seriously.

Mathematical Order Of Operations
but since it is written out as 6/2 * (1+2) and not

____6____
2 * (1+2)
the answer is "9"

if you want the answer to equal "1" then write it as
____6____
2 * (1+2)
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Old 04-29-2011, 05:26 PM   #7 (permalink)
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but since it is written out as 6/2 * (1+2) and not

____6____
2 * (1+2)
the answer is "9"

if you want the answer to equal "1" then write it as
____6____
2 * (1+2)
You seem to be missing the entire point about the differing orders of operations that we have encountered here. You are giving division precedence over multiplication, while telling me that I am wrong for giving multiplication precedence over division. It's like a retarded dog chasing his tail here (No insult intended). As MoonlitSunshine has stated numerous times, we apparently need more parameters since there are opposing orders of operations at hand.
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Old 04-29-2011, 05:32 PM   #8 (permalink)
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Originally Posted by oojay View Post
You seem to be missing the entire point about the differing orders of operations that we have encountered here. You are giving division precedence over multiplication, while telling me that I am wrong for giving multiplication precedence over division. It's like a retarded dog chasing his tail here (No insult intended). As MoonlitSunshine has stated numerous times, we apparently need more parameters since there are opposing orders of operations at hand.
Read: http://www.musicbanter.com/games-lis...ml#post1045402

No that's not the case. Left to Right as BD brought up still applies. What I'm trying to say the way it is written on the computer in a single line is limited than how it would be written on paper.

If you looking at it as 6/2*(1+2) equals

____6____
2 * (1+2)

then you are going to run into some problem.

If you understand that when the "/" line is used, only divided the number underneath divides the number on top, in this case 6/2 means 6 divided by 2, (only 2 not the rest of the equation),
6/2 = 6÷2
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Last edited by Neapolitan; 04-29-2011 at 05:45 PM.
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Old 04-29-2011, 01:31 PM   #9 (permalink)
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Multiplication and division are grouped together, so if that's all you have you just go from left to right. Same with addition and subtraction.
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Old 04-29-2011, 01:33 PM   #10 (permalink)
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I was always taught BODMAS, which puts division ahead of multiplication. Thats why I have the 6/2 and (1+2) as separate equations.

Edit: And as storymilo says, multiplication and division are grouped. So the only way oojay's way works is if he adds another set of parenthesis around the 2*(1+2), which would make the 6.
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