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Experimental question

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Experimental question [#permalink] New post 01 Oct 2005, 06:53
This is a typical experimental question which doesn't affect the GMAT Quantitative score?

Is this easy?

2 + 2 x 3 + 3 x 4 =

A. 20
B. 24
C. 40
D. 60
E. 96

Last edited by mbassmbass04 on 01 Oct 2005, 10:37, edited 1 time in total.
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Manager
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 [#permalink] New post 01 Oct 2005, 08:19
Can you please check the formatting of the question ?
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 [#permalink] New post 01 Oct 2005, 10:38
Just edited the question...
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 [#permalink] New post 01 Oct 2005, 11:08
= 2 + 6 + 12 = 20.

* takes precedence over +
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Re: Experimental question [#permalink] New post 04 Oct 2005, 03:06
mbassmbass04 wrote:
This is a typical experimental question which doesn't affect the GMAT Quantitative score?

Is this easy?

2 + 2 x 3 + 3 x 4 =

A. 20
B. 24
C. 40
D. 60
E. 96


It is 20 and is evaluated as 2 + 6 + 12 = 20
* takes preference over +.

BTW, how do we know if a question is experimental or not?. Can we figure them out?
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 [#permalink] New post 04 Oct 2005, 05:29
You will never know. They are usually everywhere. There is a possibility that a very easy one or a very tough one is an experimental question. I heard that some experimental questions are at the end of the exam, some in the middle and fewer in the beginning....
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 [#permalink] New post 04 Oct 2005, 06:21
Ans: 20. I can't quite believe this is considered very hard. Basic rules of arithmetic.
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 [#permalink] New post 04 Oct 2005, 22:03
Just curious how you knew this was an experimental problem??
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 [#permalink] New post 05 Oct 2005, 08:35
It is evident. It is an extremely very easy question.

Let me give you another experimental question:

1/7 / 7/4 =

A. 1/4

B. 4/49

C. 1/49

D. 4

E. 1

Last edited by mbassmbass04 on 05 Oct 2005, 19:00, edited 2 times in total.
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 [#permalink] New post 05 Oct 2005, 09:39
mbassmbass04 wrote:

1/7 / (7/4) =

A. 1/4

B. 4

C. 1/7

D. 7

E. 1


Am I missing something?

(1/7) / (7/4) is equivalent to (1/7)(4/7) = 4/49 which is not in any of the answer choices...
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 [#permalink] New post 05 Oct 2005, 09:55
mbassmbass04 wrote:
It is evident. It is an extremely very easy question.

Let me give you another experimental question:

1/7 / (7/4) =

A. 1/4

B. 4

C. 1/7

D. 7

E. 1


I'm guessing this 1 / 7/(7/4) => 1 / (7*4/7) = 1/4
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 [#permalink] New post 05 Oct 2005, 10:48
I got 4/49...but redoing the problem as vikrm stated..u get 1/4

how did you know these were experimental?
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 [#permalink] New post 06 Oct 2005, 09:42
Is the answer 1/4? I'm confused. If you solve the problem with a calculator as it's written you get 0.08163265...

Maybe I'm having a lapse, but why can you change the eq'n to 1/(7*4/7)? Doesn't that change the order of operations?
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 [#permalink] New post 06 Oct 2005, 09:53
MsStephanie wrote:
Is the answer 1/4? I'm confused. If you solve the problem with a calculator as it's written you get 0.08163265...

Maybe I'm having a lapse, but why can you change the eq'n to 1/(7*4/7)? Doesn't that change the order of operations?


MsStephanie... your answer is not wrong.... it all depends on how that question is formatted... interpretation.
This question should ideally require a pic rather than formatting it by typing it out.
See attached... two different scenarios.... appear to be the same.
Attachments

expqt.GIF
expqt.GIF [ 1.46 KiB | Viewed 532 times ]


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 [#permalink] New post 06 Oct 2005, 10:02
ahhh. that's what i figured. i hope on the test it's clear which order they are referring to! thank you.
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 [#permalink] New post 06 Oct 2005, 22:12
IMHO Experimental questions need not always be easy like the post's 1st question. Infact, practically speaking, no need to experiment with such a question - it can straightaway be put in the 'easy' bucket.

ETS may throw a 'new' question (to find out thru the experiment) how tough or how easy the queston is.
  [#permalink] 06 Oct 2005, 22:12
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