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# The average human being can hear sounds of up to 20 kHz

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The average human being can hear sounds of up to 20 kHz  [#permalink]

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04 Jun 2012, 22:08
1
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75% (hard)

Question Stats:

53% (01:57) correct 47% (02:00) wrong based on 587 sessions

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The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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04 Jun 2012, 22:58
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

Whew... a long sentence...

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
Correct

B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear

can't use that before comma

C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear

-Distortion of the meaning
The statement is generalizing the phenomenon.

D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them

-Distortion of the meaning

E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

Wrong usage of the modifier
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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05 Jun 2012, 05:56
I was undecided between A & E.

Could someone explain why E is wrong?

E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

Would the following modification have made the option correct?

" are often in the 100kHz range, which is inaudible to the human ear"
(Adding comma, and replacing 'that with 'which')
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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05 Jun 2012, 07:02
3
I was undecided between A & E.

Could someone explain why E is wrong?

E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

Would the following modification have made the option correct?

" are often in the 100kHz range, which is inaudible to the human ear"
(Adding comma, and replacing 'that with 'which')

E has logic issues:
most of the sounds are NOT in the 100kHz range
rather
the FREQUENCIES are in the 100kHz range.
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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05 Jun 2012, 08:39

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
B.therefore, [color=#ff0000]because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range,[/color] that makes them inaudible to the human ear - Run on sentence
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear - sounds are inaudible not the frequencies
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them - sounds are audible to human ear not to human being
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear - whether 100 KHz range is inaudible or sounds of 100 KHz frequencies are inaudible
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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05 Jun 2012, 20:15
can we use because and therefore in the same sentence, are they not redundant?

regardless of volume, seems to modify tiny parts inside a computer

I chose E, but A is better logically. But A as well has problems.

macjas wrote:
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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06 Jun 2012, 00:47
1
I choose choice A because I do not see any error in this sentence. however, I will stand on a little to explain why other choice is wrong.

macjas wrote:
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear => the frequency of the sounds ... are... => S-V agreement error.
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear
=> in logical term and meaning, the word after therefore should be the sounds, not the frequencies.
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being (should be human ear, not human being) because of their frequencies being too high for the human ear to detect them
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible [color=#ed145b]=> range cannot be inaudible to the human ear[/color] to the human ear

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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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06 Jun 2012, 17:09
This is an interesting problem. I thought A was fine but read each of the remaining options. If I were to go with either, it would be D or E. D has missing info and E seems to slightly change the sentence.
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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06 Jun 2012, 17:53
Of course C, other options have either modification error or meaning distortion.
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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06 Jun 2012, 23:18
macjas wrote:
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

i pick A here. does gmat test solely on punctuation??? even though other options have minor error. but i think punctuation is the major error in this SC
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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07 Jun 2012, 13:56
1
Definitely a labyrinthine sentence .

Best way to attack it is by finding the one or two words each answer choice (except the correct answer) that are faulty. Elimination will get us quickly (or at least relatively quickly ) to the correct answer:

The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect

B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear

C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear

Here the answer choice is implying that 'the tiny parts' have frequencies. It is the sound they generate that has a frequency.

D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them

E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

Need to use 'which' instead of 'that' because we are referring to all 100KHZ sounds.
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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14 Jun 2012, 05:38
uledssul wrote:
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

Whew... a long sentence...

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
Correct

B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear

can't use that before comma

C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear

-Distortion of the meaning
The statement is generalizing the phenomenon.

D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them

-Distortion of the meaning

E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

Wrong usage of the modifier

Is the usage of "their" correct in the answer choice A . I would assume that "its" would be more appropriate.

When do we choose "they" and when do we choose "it".

Thanks
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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14 Jun 2012, 07:39
macjas wrote:
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

IMO A is the correct answer.
A sounds correct.
B.."therefore, because" use make this a wrong choice
C..it is the sound which is in some X frequency range is inaudible and not the frequency itself
D..use of therefore at wrong place and use of being make this incorrect.
E..presence of conclusive word would have made it more clear and use of that is not good.
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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14 Jun 2012, 22:17
mazerath wrote:
uledssul wrote:
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

Whew... a long sentence...

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
Correct

B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear

can't use that before comma

C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear

-Distortion of the meaning
The statement is generalizing the phenomenon.

D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them

-Distortion of the meaning

E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

Wrong usage of the modifier

Is the usage of "their" correct in the answer choice A . I would assume that "its" would be more appropriate.

When do we choose "they" and when do we choose "it".

Thanks
Mazerath

Hey Mazerath,

They, Them ,Their are plural.
It and It's are singular.

In A, their logically refers to "sounds" so we need to use a plural pronoun "their"

Also guys I was just wondering, the part that is not underlined:
The average human being can hear sounds of up to 20 kHz frequency
seems awkward to me. Why would you say 20kHz frequency, its like saying The car can accelerate to 100mi/h speed in ten seconds?
Just a thought...
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Re: The average human being can hear sounds of up to 20 kHz freq  [#permalink]

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14 Jun 2012, 22:54
Thank you for giving more good information about GMAT test.
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Re: The average human being can hear sounds of up to 20 kHz  [#permalink]

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19 Feb 2014, 07:29
macjas wrote:
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

You need here a therefore after the semi-colon

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect - CORRECT
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear - the construction of the sentence is not logic here
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear - You cannot have : parts inside a computer often in the 100 kHz range
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them - You need a therefore after the semi colon
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear - You need a therefore after the semi colon

hih
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Re: The average human being can hear sounds of up to 20 kHz  [#permalink]

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26 Aug 2016, 13:23
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

In the above statement the construction is -

Independent Clause (Subject +Working Verb...) ; Independent Marker, Independent Clause (Subject +Working Verb...)

Note that -therefore is the Independent marker , which shows that independent clause is there and this construction generally used after ;

note that there is no problem in original sentence , now the POE
A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect-Correct
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear- after ; IC should come, note in this option no IC is present, because starts a dependent clause ( used for reasoning ) and that also starts the dependent clause ( relative pronoun )
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear - wrong-- intended meaning is changes as per the original sentence -sounds are inaudible to the ear , not the frequencies
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them - being is wrong here as it is used to present the temporary state , original sentence is talking about the fact
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear - wrong , as in option C the intended meaning is changed , here that modifies 100 KHz range
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Re: The average human being can hear sounds of up to 20 kHz  [#permalink]

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18 Apr 2018, 07:44
Paris75 wrote:
macjas wrote:
The average human being can hear sounds of up to 20 kHz frequency; therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect.

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear

You need here a therefore after the semi-colon

A.therefore, most of the sounds made by the tiny parts inside a computer — regardless of volume — are inaudible to the human ear, because their frequencies are often in the 100 kHz range — too high for the human ear to detect - CORRECT
B.therefore, because the frequency of the sounds made by the tiny parts inside a computer are often in the 100 kHz range, that makes them inaudible to the human ear - the construction of the sentence is not logic here
C.therefore, the frequencies of the tiny parts inside a computer—regardless of volume—often in the 100 kHz range, are inaudible to the human ear - You cannot have : parts inside a computer often in the 100 kHz range
D.most of the sounds made by the tiny parts inside a computer—regardless of volume—are therefore inaudible to a human being because of their frequencies being too high for the human ear to detect them - You need a therefore after the semi colon
E.most of the sounds made by the tiny parts inside a computer—regardless of volume—are often in the 100 kHz range that is inaudible to the human ear - You need a therefore after the semi colon

hih

Bumping it
You need a therefore after a semi-colon
Is that a rule? GMATNinja generis or any experts
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Re: The average human being can hear sounds of up to 20 kHz  [#permalink]

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18 Apr 2018, 08:03
2
itisSheldon wrote:
Bumping it
You need a therefore after a semi-colon
Is that a rule? GMATNinja generis or any experts

Sorry, it is definitely NOT a rule that you need a "therefore" after the semicolon! The only rule you really need to worry about in this situation: semicolons need to separate two independent clauses. And sure, "therefore" COULD be part of an independent clause, but it certainly isn't necessary. More on GMAT's treatment of punctuation in this video.

I hope this helps!
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Re: The average human being can hear sounds of up to 20 kHz  [#permalink]

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19 Apr 2018, 21:47
GMATNinja wrote:
itisSheldon wrote:
Bumping it
You need a therefore after a semi-colon
Is that a rule? GMATNinja generis or any experts

Sorry, it is definitely NOT a rule that you need a "therefore" after the semicolon! The only rule you really need to worry about in this situation: semicolons need to separate two independent clauses. And sure, "therefore" COULD be part of an independent clause, but it certainly isn't necessary. More on GMAT's treatment of punctuation in this video.

I hope this helps!

Hi
Actually I eliminated all options with "Therefore". I though independent clauses cannot start with "therefore".
Can you please provide some examples where "therefore" is a be part of an independent clause.

Thanks
Re: The average human being can hear sounds of up to 20 kHz &nbs [#permalink] 19 Apr 2018, 21:47

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