GMAT 1000SC Q#1

QUESTION 1

GMAT SC1000 Question No #505

505. Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time.

(A) year, and they cost the nation $50 billion in medical expenses and lost
(B) year and thus costs the nation $50 billion in medical expenses and lost
(C) year, so as to cost the nation $50 billion in medical expenses and lost
(D) year that costs the nation $50 billion in lost medical expenses and
(E) year, which thus cost the nation $50 billion in lost medical expenses and


B is prefect answer. It seems the most of the places costs is typed as cost..otherwise B is correct

Poeple may be confused between B and D but in D 'year that costs' seems year is realted to cost in some way

In all other choices cost is wrong as subject Migraine is singular

Learning

1) singular subject has singular verb..

ANS IS B

GMAT SC1000 Question No #504

504. Marketing researchers have found that, because many residents of the Southeast do not share the same ethnic heritage as Northeasterners, the two varieties of commercially prepared coleslaw most popular in New York City and Boston are virtually ignored by consumers in Richmond and Raleigh.

(A) because many residents of the Southeast do not share the same ethnic heritage as
(B) because many residents of the Southeast do not share the same ethnic heritage with
(C) because many residents of the Southeast do not have the same ethnic heritage as
(D) due to many residents of the Southeast not sharing the same ethnic heritage with
(E) whereas many residents of the Southeast do not share the same ethnic heritage as

D, E are out due to cannnot be used as a subtitue of because ( spideys notes ;) )
Correct idiom is share with So A is out

Now its between C and B

C is picked because you 'HAVE' heritage you cannot share your heritage ...

So ANS IS C

Open to discussion.. :)

GMAT SC1000 Question No #503

4. Margaret Courtney-Clarke has traveled to remote dwellings in the Transvaal to photograph the art of Ndebele women, whose murals are brilliantly colored, their geometrical symmetries embellished with old and new iconography and in a style that varies from woman to woman and house to house.

(A) whose murals are brilliantly colored, their geometrical symmetries embellished with old and new iconography and in a style that varies from woman to woman and house to house
(B) whose murals are brilliantly colored, their geometrical symmetries are embellished with old and new iconography, and their style is varying among women and houses
(C) whose murals are brilliantly colored, their geometrical symmetries are embellished with old and new iconography, and they are in styles that vary from woman to woman and house to house
(D) with murals brilliantly colored, their geometrical symmetries embellished with old and new iconography, and their style varies among women and houses
(E) with murals that are brilliantly colored, their geometrical symmetries embellished with old and new iconography, and their styles vary among women and houses

The options D) and E) have 'with murals brightely coloured' which distorts the meaning meaning mrs clarke visited these places wearing ''murals '

B&C say that womens' style is varying.. Again this is wrong


So Ans is A

Another explaination

A has a absolute phrase ...

look here for more

http://www.ucalgary.ca/UofC/eduweb/grammar/course/sentence/2_4e.htm

Learnings:

1) What is an absolute phrase
2) Read complete sentence to see if its meaning full. try to relate all parts of the sentence

GMAT SC1000 Question No #502

502. Many writers of modern English have acquired careless habits that damage the clarity of their prose, but these habits can be broken if they are willing to take the necessary trouble.

(A) but these habits can be broken
(B) but these habits are breakable
(C) but they can break these habits
(D) which can be broken
(E) except that can be broken

Correct Answer is between A and C

I choose C as it has active voice.

Here A also seems to be correct. But it has passive voice. So its a matter of BEST CHOICE

ANS IS C

Learnings:

1) Choose the BEST CHOICE
2) Active voice is better than passive voice as an answer on GMAT

GMAT SC1000 Question No #501

501. Many scholars regard the pre-Hispanic civilizations of Peru as the most impressive in South America.

(A) regard the pre-Hispanic civilizations of Peru as
(B) regard the pre-Hispanic civilizations of Peru to be
(C) regard the pre-Hispanic civilizations of Peru to have been
(D) consider that the pre-Hispanic civilizations of Peru are
(E) consider the pre-Hispanic civilizations of Peru as

regard .. as is the best idiom.

considered as is considered redundant in GMAT :)

Learnings:

1) Idiom usage

ANS A
More suggestions post a comment :)

GMAT SC1000 Question No #500

500. Many psychologists and sociologists now contend that the deliberate and even brutal aggression integral to some forms of competitive athletics increase the likelihood of imitative violence that erupts among crowds of spectators dominated by young adult males.

(A) increase the likelihood of imitative violence that erupts
(B) increase the likelihood that there will be an eruption of imitative violence
(C) increase the likelihood of imitative violence erupting
(D) increases the likelihood for imitative violence to erupt
(E) increases the likelihood that imitative violence will erupt

ANS E

EXPLAINATION :

Main differnce between A,B,C,Dand E is that A,B,C has word 'increase' where D,E has ' increases' ..
If you carefully read here the subject is 'brutal agression' so the word increases will go with it. A,B,C are out

Now Between D,E the main differnce is likelihood for / likelihood that
Idiom time guys ... Likelihood for is incorrect idiom So D is out

So Ans is E

Got a better explaination.. Give it in comments ;)

Some more information :

Likelihood of something happening.
Likelihood that something will happen.

Both are correct

Imp Points from this question

1) Find the subject carefully
2) Idiom

1000Sc Explainations

Hi guys

I am planning to put solutions with explainations to
1000Scs.

I have not solved all of them and all the solutions posted are not mine.
Still i have learned them this way. Hope it will help you also

Best of luck