Math question.

[Mllcg]

is the answer 1 or 9?

 

http://news.insing.com/tabloid/math-questi...ate/id-1f343f00

 

6/2(1+2)=?

 

my answer is 9

 

anyone else?

[Spirited]

yup. mine is 9.

 

unless it is 6/[2(1+2)], then it is 1.

 

without the brackets, just do the sum from left to right.

[Looprevil]

My mind tells me it's a 9 , but my heart goes for 1

[JackRabbit]

Here's the correct method of working this out:

 

[Metalsubzero]

Confirm it's 9..

[Sk65]

if the answer is 1

 

the shock is as good a neutrinos travel faster than light.

[1fast1]

9. Based on default order of operations. But it's a bad question. I would make it unambiguous, like so: (6/2)*(1+2)

[JackRabbit]

I would make it unambiguous

 

 

where's the fun in that?!

[SimonTan]

The formula is ambiguous.

We do not know the brackets belong to the denominator or numerator!!!

If strictly speaking the '/' has no meaning.

Breaking it down and writing it in proper fractions is important.

As we can see there are two ways to interprete the brackets position.

 

So it all boils down to what want the initial intention of the formula and it's meaning.

 

If purely just MatLab or computer/calculator execution of the exact formula then u will get 9.

 

[SimonTan]

Which is why nowadays the math problem in PSLE are explain in English wordings.

 

Three couples, and each couple have one apple n two orange. How many fruits in total = 9

 

One apple n two oranges packed in box. Three couples were told only two boxes to share. How many fruits each person has = 1

 

 

[Endorrachua]

Here's the correct method of working this out:

can i redo your solution this way??

 

6/2(a + b) = 9

Let assume a = 1

 

reconstruct the equation

 

6/2(1 + b) = 9

 

Please find out what is "b"

 

Method 2

 

6/2(a + b) = 1

Again we assume a =1

 

reconstruct the equation

 

6/2(1 + b) = 1

 

Please find out what is "b"

[SimonTan]

In my maths day....if the '/' is written 'short' then the (1+2) belongs to the numerator.

If the '/' is drawn long to cover the (1+2) then obviously it belongs to the denominator.

 

The problem is now we use computer to write out the formula, and it cause confusion where the brackets belong.

 

[JackRabbit]

Not on the AYE.

 

Anyway it's a poorly 'worded' maths question that invites two answers.

 

 

So Neutrino breaks speed limit on PIE, then?

[SimonTan]

Everyone break the speed limit when the headlights is turned on. The light beams travels forward at the speed of light!!

By the law, causing any part of said vehicle to exceed the posted speed limit is an offence.

 

[Raymondism]

9. Based on default order of operations. But it's a bad question. I would make it unambiguous, like so: (6/2)*(1+2)

 

dun think it is ambiguous... there is a certain "rule" for all these...

maybe that is the purpose of this question

[Raymondism]

In my maths day....if the '/' is written 'short' then the (1+2) belongs to the numerator.

If the '/' is drawn long to cover the (1+2) then obviously it belongs to the denominator.

 

The problem is now we use computer to write out the formula, and it cause confusion where the brackets belong.

 

there is no confusion... if u wan the entire string after the / to be the denominator... just use a bracket to bracket all those up

[Jman888]

dun think it is ambiguous... there is a certain "rule" for all these...

maybe that is the purpose of this question

 

 

to kill the calculator industry so that people can start using their brain ?

[Raymondism]

to kill the calculator industry so that people can start using their brain ?

 

there are certain years (probably in primary sch) that calculator was not allowed...

remember the calculator watch that got banned?