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Aside/Besides/Unlike/Unless :)

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Aside/Besides/Unlike/Unless :)

by GmatKiss » Sat Oct 08, 2011 1:58 am
Unlike the use of headset telephones , which allow drivers to keep their hands on the wheel, all drivers are prohibited from using portable phones while driving.


1. Unlike the use of headset telephones , which allow drivers to keep their hands on the wheel
2. Besides using headset telephones, which allow drivers to keep their hands on the wheel
3. Unless headset telephones, which allow drivers to keep their hands on the wheel, are used
4. Other than the use of headset telephones, which allows drivers to keep their hands on the wheel
5. Aside from using headset telephones which allow drivers to keep their hands on the wheel
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by gmatblood » Sat Oct 08, 2011 2:01 am
IMO :B
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by gmatblood » Sat Oct 08, 2011 3:11 am
what is OA?
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by sl750 » Sat Oct 08, 2011 3:32 am
IMO C

Unlike suggests we are making a contrast, but there is no contrast being made here. The meaning of the sentences suggests that one condition has to be met otherwise another action could occur

Besides means in addition to. This makes the sentence illogical
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by BellTheGMAT » Sun Oct 09, 2011 1:37 am
nice question... i found a similar question -

Ques - Unlike water, which is complimentary, all passengers will need to pay cash for beverages during the transoceanic flight.
(A) Unlike water, which is complimentary
(B) Besides water, which is offered free of charge
(C) Unless the drink is water, which is complimentary
(D) Not like water, which is offered free of charge
(E) With water being the only exception


OA C
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by GmatKiss » Tue Oct 11, 2011 11:52 am
Unlike the use of headset telephones , which allow drivers to keep their hands on the wheel, all drivers are prohibited from using portable phones while driving.


1. Unlike the use of headset telephones , which allow drivers to keep their hands on the wheel
2. Besides using headset telephones, which allow drivers to keep their hands on the wheel
3. Unless headset telephones, which allow drivers to keep their hands on the wheel, are used
4. Other than the use of headset telephones, which allows drivers to keep their hands on the wheel
5. Aside from using headset telephones which allow drivers to keep their hands on the wheel

OA : C
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by GmatKiss » Tue Oct 11, 2011 11:54 am
BellTheGMAT wrote:nice question... i found a similar question -

Ques - Unlike water, which is complimentary, all passengers will need to pay cash for beverages during the transoceanic flight.
(A) Unlike water, which is complimentary
(B) Besides water, which is offered free of charge
(C) Unless the drink is water, which is complimentary
(D) Not like water, which is offered free of charge
(E) With water being the only exception

could someone help on arriving at C?

OA C
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by mehrasa » Tue Oct 11, 2011 12:42 pm
it should be c
bcuz UNLESS is a conjunction and link two independent sentence together... ather words such as unline, should follow this pattern " unlike X, which is...., Y..." that X and Y are parallel, but in other choices the parallelism has been violated..
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by Brian@VeritasPrep » Wed Oct 12, 2011 10:42 am
Hey guys,

I love both of these questions, which are all based off of the same OG question:
Unlike transplants between identical twins, whose genetic endowment is the same, all patients receiving hearts or other organs must take anti-rejection drugs for the rest of their lives.

(A) Unlike transplants between identical twins, whose genetic endowment is the same
(B) Besides transplants involving identical twins with the same genetic endowment
(C) Unless the transplant involves identical twins who have the same genetic endowment
(D) Aside from a transplant between identical twins with the same genetic endowment
(E) Other than transplants between identical twins, whose genetic endowment is the same
Notice the pattern in these - the questions want you to think you're deciding between "unlike", "besides", "not like", etc. But the key to C in each of these choices is that the other answer choices are all modifiers:

-Unlike water, all passengers
-Aside from a transplant, all patients
-Other than the use of headset telephones, all drivers

And none of those modifiers is logical. The subject of each sentence is a type of person (drivers, passengers, patients) but the modifier describes objects.

In each of these, choice C changes the game - it's not a modifier. Each answer choice C provides an "unless X is true, Y is true" setup in which the underlined portion contains its own subject and verb. So "unless headset telephones ARE USED, all drivers are prohibited..." isn't a modifier-subject-verb, it's two related clauses. That's the difference in these.

Note two other things:

1) Each one tries to get you to decide between synonyms (unlike, besides, not like) - which should indicate to you that you have to find a better decision point. We simply won't become experts on the nuances (if, indeed, any exist) between those extremely-similar terms.

2) Each also involves a modifier-within-a-modifier (the interior modifier starting with "which"). If you note that "which" in each case does properly modify the word before it, you can read as though that modifier isn't even there. Modifiers on the GMAT have two roles - they're either decision points based on which you can eliminate the whole answer (because it's an illogical modifier) or they're just there to make you read more words in your pursuit of another decision point. If you don't use a comma-separated modifier to eliminate a sentence, then try ignoring it to make a shorter sentence.
Brian Galvin
GMAT Instructor
Chief Academic Officer
Veritas Prep

Looking for GMAT practice questions? Try out the Veritas Prep Question Bank. Learn More.
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