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A personal computer contains two principal types of memory

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A personal computer contains two principal types of memory  [#permalink]

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A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

A.) A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

B.) A personal computer contains two principal types of memory, ROM(Read Only Memory) which cannot be altered, along with RAM, usually in the form of DRAM(Dynamic Random Access Memory) that can be changed but loses all data if power stops.

C.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

D.) A personal computer contains two principal types of memory, ROM(Read Only Memory) that cannot be altered, as well as RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

E.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but lose all data if power stops.

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Originally posted by anvesh004 on 23 Nov 2018, 09:32.
Last edited by anvesh004 on 25 Nov 2018, 05:20, edited 1 time in total.
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Re: A personal computer contains two principal types of memory  [#permalink]

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New post 24 Nov 2018, 03:30
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Is there anything wrong with the transcription? There is a semi-colon, but there is no IC after that in all the five choices. Also, none of the 'which' choices has a comma preceding it. Looks like an upstart job.

Is this from MGMAT?

Probably, if we change the semicolon into a colon, we may choose A.
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Re: A personal computer contains two principal types of memory  [#permalink]

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New post 25 Nov 2018, 04:32
mikemcgarry VeritasKarishma GMATNinja :
Dear Expert,
Could you please shed some light on the usage of That and Which?
Thank You.
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Re: A personal computer contains two principal types of memory  [#permalink]

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New post 25 Nov 2018, 05:21
daagh wrote:
Is there anything wrong with the transcription? There is a semi-colon, but there is no IC after that in all the five choices. Also, none of the 'which' choices has a comma preceding it. Looks like an upstart job.

Is this from MGMAT?

Probably, if we change the semicolon into a colon, we may choose A.



Dear Sir,

There is a mistake i made while uploading the question. I missed changing the punctuation in the answer choices.
Edited the same now.
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Re: A personal computer contains two principal types of memory  [#permalink]

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New post 27 Nov 2018, 12:09
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anvesh004 wrote:
A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

A.) A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

B.) A personal computer contains two principal types of memory, ROM(Read Only Memory) which cannot be altered, along with RAM, usually in the form of DRAM(Dynamic Random Access Memory) that can be changed but loses all data if power stops.

C.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

D.) A personal computer contains two principal types of memory, ROM(Read Only Memory) that cannot be altered, as well as RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

E.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but lose all data if power stops.
Note here that this options SEEMS parallel but the last sentence gives it away as being incorrect. "but lose all data" is wrong grammatically.


This question isn't so much about when to use "that" or "which", instead, it requires good comprehension skills to be able to see that parallelism can be met without only looking at black and white, rote memorized parallel grammar rules. The GMAT tests test takers in that it will make questions difficult by making it hard to just use rules. A little comprehension goes a long way. So it's important to up your reading of high quality articles during your study sessions (Economist, New Yorker etc). Option C is the only clear parallel and correct answer choice.

C.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops. The "and RAM" is followed by a comma and a description of said RAM, do not let that deter you into thinking it MUST be parallel too. What follows is "which can be" and this is parallel to the earlier "which cannot be" marker.
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A personal computer contains two principal types of memory  [#permalink]

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New post 04 Dec 2018, 20:46
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A.) A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

B.) A personal computer contains two principal types of memory, ROM(Read Only Memory) which cannot be altered, along with RAM, usually in the form of DRAM(Dynamic Random Access Memory) that can be changed but loses all data if power stops.

C.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

D.) A personal computer contains two principal types of memory, ROM(Read Only Memory) that cannot be altered, as well as RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

E.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but lose all data if power stops.
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Re: A personal computer contains two principal types of memory  [#permalink]

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New post 10 Jan 2019, 13:00
anvesh004 wrote:
A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

A.) A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

B.) A personal computer contains two principal types of memory, ROM(Read Only Memory) which cannot be altered, along with RAM, usually in the form of DRAM(Dynamic Random Access Memory) that can be changed but loses all data if power stops.

C.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

D.) A personal computer contains two principal types of memory, ROM(Read Only Memory) that cannot be altered, as well as RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

E.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but lose all data if power stops.


In OA-C , there is no comma before 'which'. I believe a comma before 'which' is necessary.

AjiteshArun , GMATNinja , MagooshExpert , GMATGuruNY , VeritasPrepBrian , MartyMurray , DmitryFarber , daagh , generis , other experts - please enlighten
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Re: A personal computer contains two principal types of memory  [#permalink]

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New post 13 Jan 2019, 02:51
Skywalker18 wrote:
anvesh004 wrote:
A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

A.) A personal computer contains two principal types of memory; ROM(Read Only Memory) that cannot be altered, and RAM, that is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

B.) A personal computer contains two principal types of memory, ROM(Read Only Memory) which cannot be altered, along with RAM, usually in the form of DRAM(Dynamic Random Access Memory) that can be changed but loses all data if power stops.

C.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

D.) A personal computer contains two principal types of memory, ROM(Read Only Memory) that cannot be altered, as well as RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but loses all data if power stops.

E.) A personal computer contains two principal types of memory: ROM(Read Only Memory) which cannot be altered, and RAM, which is usually in the form of DRAM(Dynamic Random Access Memory) which can be changed but lose all data if power stops.


In OA-C , there is no comma before 'which'. I believe a comma before 'which' is necessary.

AjiteshArun , GMATNinja , MagooshExpert , GMATGuruNY , VeritasPrepBrian , MartyMurray , DmitryFarber , daagh , generis , other experts - please enlighten


I also have the same doubt. Which always has a comma before it.
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Re: A personal computer contains two principal types of memory   [#permalink] 13 Jan 2019, 02:51
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