A certain junior class has 1000 students and a certain senior class has 800 students. Among these students, there are 60 siblings pairs, each consisting of 1 junior and 1 senior. If 1 student is to be selected at random from each class, what is the probability that the 2 students selected will be a sibling pair?

a) 3/40,000
b) 3/20,000
c) 1/32
d) 1/20,000
e) None of these
Please post the explanations if you know.

Idiom List

1) a debate over
2) a lot
3) a responsibility to
4) a result of
5) a sequence of
6) acclaimed as is the correct idiom (Acclaimed to be is wrong)
7) accompanied by….
adapted for
9) Adverb twice cannot be an object of proposition ?by?. ?Increase by twice? is incorrect; ?doubled? is correct
10) affect to..
11) agree with
12) Aid in (Aid for is incorrect)
13) Allergy to (Allergy of, allergy for are incorrect)
14) Allocated to is the correct idiom
15) alternative to….
16) as a result of…
17) as an instance of
18) as good as…or better than
19) as great as
20) as much as
21) Associate X with Y
22) assume …to be of…
23) At least as strong as(At least as great as)
24) Attempt to ?do something? (Attempt at doing is incorrect).
25) attend to (someone)
26) attribute X to Y/X is attributed to Y
27) based on
28) believe X to be Y
29) Believed to have
30) benefit from…
31) better served by X than Y ..
32) between X and Y
33) Both X and Y (Both X as well as Y is incorrect) Both at X and at Y is correct. Both on X or on Y is correct.
34) Business ethics – Is a singular word
35) call…to consider…
36) centers on
37) Combined X with Y OR Combined X and Y (Both are correct)
38) Compensate for
39) Concerned for – worried; concerned with – related/affiliated
40) conform to
41) Consider X to be Y (a little controversial)
42) contrary to…
43) created with
44) Credit X Rupees to Y?s account (When money is involved)
45) Credit X with discovering Y (Credit with doing something)
46) decline in….
47) defined as
48) depends on whether
49) depicted as
50) Descendent of (Descendent for is incorrect)
51) Different from one another (Different one from the other is wrong)
52) Distinguish between X and Y (2 very different items, distinguished, say red and green colors)
53) Distinguish between X and Y (Distinguish X from Y is incorrect)
54) Distinguish X from Y (Two pretty similar items, say original paintings from fake ones)
55) doubt that
56) either…or
57) enable to
58) entrusted with…
59) Estimated to be (Estimated at is incorrect)
60) expected that X would be Y …
61) expected X to be Y …
62) extent to …
63) fascinated by
64) for jobs..
65) for over…XXX years…
66) forbid X to do Y identical with
67) forcing …to…
68) From X to Y (Grow from 2 million to 3 billion) (From X up to Y is wrong)
69) Given credit for being ones – who
70) had better(do)
71) In an attempt to (gain control)
72) in contrast to
73) independent from
74) indifferent towards
75) Intent on
76) interaction of …
77) Just as – So too
78) May be (This is a word) is idiomatic, maybe (This means perhaps) is not idiomatic
79) Mistake X for Y
80) modeled after
81) more than ever
82) more X than Y …
83) more…than / less…than
84) more…than ever…
85) must have (done)
86) Native of (Native to is also used in some cases)
87) Neither – Nor should have parallel forms associated to it.
88) no less….than
89) No sooner than
90) Not in a flash but in a
91) not only…but also
92) Not so much to X as to Y
93) not X …but rather Y ..
94) noted that ..
95) one attributes X (an effect) to Y (a cause)
96) One X for every ZZ( some numeric number) Y’s …
97) Persuaded X to do Y
98) Plead guilty for failing
99) Potential for causing
100) potential to
101) prohibits X from doing Y
102) range from X to Y
103) range of …
104) reason?.. that incorrectly seen as reason?.. because
105) ?Regard as? is the correct idiom — Regarded as having, Regarded as ones who have
106) regardless
107) regards X as Y …
108) replacing with…
109) Require that X be Y (Not require that X is Y)
110) research to
111) responsible for
112) restitution…for …
113) resulting in
114) retroactive to
115) Same as X..as to Y
116) same to X as to Y
117) seem…to…(seem is plural)
118) so (adjective) that
119) So X as to be Y (So unreal as to be true)
120) So X that Y (So poor that they steal)
121) subscribe to
122) such…as
123) targeted at
124) that X …that Y …
125) That X is called for is indicated both by Y and by Z.
126) the same to X as to Y
127) to .. used to (example to get used to or to become used to)
128) to contrast X with Y
129) To exchange X for Y (exchange X with Y or any other form is incorrect)
130) to mistake X for Y
131) to monitor …
132) to orbit…
133) To ratify (At ratifying is incorrect) An attempt to ratify is the correct use
134) to result in
135) to sacrifice X for Y
136) to survive
137) To try to fix is the right idiom (to try and fix is incorrect)
138) To worry about someone?s condition (To keep worrying over an action)
139) used in the construction…
140) used to (do)
141) viewed marriage as
142) way to provide (Way for providing is incorrect)
143) When ?rates? means ?prices charged? it should be followed with ?for?
144) widely anticipated that….
145) Worried about (When talking about someone?s condition)
146) X [is] expected to Y
147) X as Y ..
148) X forbids Y to do Z …
149) X is attributed to Y
150) X is different from Y (different than Y is incorrect)
151) X is to what Y is to
152) X is unknown, nor it is known – is a correct idiom (Neither is not required)
153) X ordered that Y be Z’ed…
154) X ordered Y to be Z’ed..
155) X ordered Y to do Z
156) X prohobits Y from doing Z …

(Contributed by David)

Note: Add more idioms in comment box. We will add them asap.

What is the standard deviation of Q, a set of consecutive integers?

(1) Q has 21 members.
(2) Q has 20 members

A) Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
B) Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
C) Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
D) Each statement alone is sufficient to answer the question.
E) Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.

A string of 10 lightbulbs is wired in such a way that if any individual lightbulb fails, the entire string fails. If for each individual lightbulb the probability of failing during time period T id 0.06, what is the probability that the string of lightbulbs will fail during time period T?

A.0.06

B.(0.06)^10

C.1-(0.06)^10

D.(0.94)^10

E.1-(0.94)^10

A 30% solution of barium chloride is mixed with 10 grams of water to form a 20% solution. How many grams of original solution did we start with ?

A) 10
B) 15
C) 20
D) 25
E) 30

Tom, Jane, and Sue each purchased a new house. The average (arithmetic mean) price of the three houses was $120,000. What was the median price of the three houses?

(1) The price of Tom’s house was $110,000.
(2) The price of Jane’s house was $120,000.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

The number of ways in which three letters be posted in four letter boxes in a village, if all the three letters are not posted in the same letter box.

A) 64
B) 60
C) 81
D) 78
E) None of these

Q is a prime number bigger than 10. What is the smallest positive number (except 1) that 3Q can be divided by equally?

a) 3Q.
b) Q
c) 3
d) Q+3
e) 2Q

A fair, six-sided die is rolled. What is the probability of obtaining a 3 or an odd number?

A. 1/6
B. 1/5
C. 1/4
D. 2/3
E. 1/2

.1…2….3…. 4….. 5…… 6………………………Good News… TakeGMAT Team pleased to announce that now you will receive not 1, 2 or 3….Total six questions a day…….On the each interval of 4 hours. We can increase or decrease the frequency of questions depends on your feedback.

Topics includes
> Critical Resoning
> Sentence Correction
> Reading Comprehension
> Data Sufficiency
> Problem Solving
> PS/DS

We love to hear you, just drop a line below for us (not necessary words of appreciation)……….

The only purpose for which a particular type of tape is needed is to hold certain surgical wounds closed for ten days—the maximum time such wounds need tape. Newtape is a new brand of this type of tape.
Newtape’s salespeople claim that Newtape will improve healing because Newtape adheres twice as long as the currently used tape does.
Which of the following statements, if true, would most seriously call into question the claim made by Newtape’s salespeople?
(A) Most surgical wounds take about ten days to heal.
(B) Most surgical tape is purchased by hospitals and clinics rather than by individual surgeons.
(C) The currently used tape’s adhesiveness is more than sufficient to hold wounds closed for ten
days.
(D) Neither Newtape nor the currently used tape adheres well to skin that has not been cleaned.
(E) Newtape’s adhesion to skin that has been coated with a special chemical preparation is
only half as good as the currently used tape’s adhesion to such coated skin.

If 9 is a factor of 2x, then w=which of the following may not be an integer?

A. 6x/54 + 2x/3
B. (4x-18)/9
C. (2x+27)/9
D. (81 – 4x^2)/2
E. (2x – 3)/3

For how many two digit positive numbers will tripling the tens digit give us a two digit number that is triple the original. (Contributed by: Srinivasan, Hyderabad)
A) None
B) 1
C) 2
D) 3
E) 4

General Grammar Resources

http://www.ccc.commnet.edu/grammar/

http://newark.rutgers.edu/~jlynch/Writing/

http://www.grammarstation.com

A, An, The (articles)

http://www.learnenglish.org.uk/words/activities/articles01.h tml
http://www.impactseries.com/star%20files/wwwboard/messages/4 .html
http://depts.gallaudet.edu/englishworks/grammar/main/article s.htm

http://www.rensselaer.edu/dept/llc/writecenter/web/esl.html

http://webster.commnet.edu/grammar/determiners/determiners.h tm#articles

http://efl.bravepages.com/grammar2.htm

Adjectives

http://webster.commnet.edu/grammar/adjectives.htm

http://hem.passagen.se/peter9/gram/g_adj.html

http://www.factmonster.com/ipka/A0885349.html

http://www.grammarstation.com/KnowyourAdjectives.html

http://www2.actden.com/writ_den/tips/sentence/adjectiv.htm

http://grammar.englishclub.com/adjectives.htm

http://www.uottawa.ca/academic/arts/writcent/hypergrammar/ad jectve.html
http://ellerbruch.nmu.edu/CS255/cusher/partsofspeech/adjecti ve.html

Nouns

http://webster.commnet.edu/grammar/nouns.htm

http://hem.passagen.se/peter9/gram/g_sub.html

http://www.grammarstation.com/KnowYourNouns.html

http://ellerbruch.nmu.edu/CS255/cusher/partsofspeech/noun.ht ml

http://www2.actden.com/writ_den/tips/sentence/nouns.htm

http://www.ojohaven.com/collectives/

http://grammar.englishclub.com/nouns.htm

Adverbs

http://www.grammarstation.com/KnowYourAdverbs.html

http://webster.commnet.edu/grammar/adverbs.htm

http://ellerbruch.nmu.edu/CS255/cusher/partsofspeech/adverb. html

Clauses

http://www.uottawa.ca/academic/arts/writcent/hypergrammar/bl dcls.html

http://webster.commnet.edu/grammar/clauses.htm

http://owl.english.purdue.edu/handouts/grammar/g_clause.html

http://www.edict.com.hk/vlc/clauses/default.htm

http://eslbee.com/AdjClauses.htm

Plurals

http://webster.commnet.edu/grammar/plurals.htm

http://owl.english.purdue.edu/handouts/grammar/g_spelnoun.ht ml
http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/irrplu.ht m
http://www.wm.edu/CAS/modlang/gasmit/grammar/nouns/plurals.h tm

Prepositions

http://hem.passagen.se/peter9/gram/g_prp.html

http://webster.commnet.edu/grammar/prepositions.htm

http://ellerbruch.nmu.edu/CS255/cusher/partsofspeech/preposi tion.html

Pronouns

http://hem.passagen.se/peter9/gram/g_prn.html

http://webster.commnet.edu/grammar/pronouns1.htm

http://ellerbruch.nmu.edu/CS255/cusher/partsofspeech/pronoun .html
http://www.uottawa.ca/academic/arts/writcent/hypergrammar/us epronn.html

Verbs

http://hem.passagen.se/peter9/gram/g_vrb.html

http://webster.commnet.edu/grammar/verbs.htm

http://ellerbruch.nmu.edu/CS255/cusher/partsofspeech/verb.ht ml
http://www.uottawa.ca/academic/arts/writcent/hypergrammar/us everb.html

Verb Tenses

http://www.grammarstation.com/servlet/GrammarGuide?type=VB

http://owl.english.purdue.edu/handouts/esl/esltensverb.html

http://leo.stcloudstate.edu/grammar/tenses.html

http://www.uottawa.ca/academic/arts/writcent/hypergrammar/us etense.html

http://www.pacificnet.net/~sperling/quiz/vtr.html

http://grammar.englishclub.com/verb-tenses.htm

http://www.ruthvilmi.net/hut/help/grammar_help/verbs.html

http://www.tc.cc.va.us/writcent/handouts/grammar/verbtens.ht m

http://www.lsilver.net/tense.htm

http://www.tc.cc.va.us/writcent/handouts/grammar/verbtens.ht m

Voice (active/passive)

http://www.grammarstation.com/servlet/GrammarGuide?type=ACTI VEPASSIVE
http://owl.english.purdue.edu/handouts/grammar/g_actpass.htm l

http://www.uvsc.edu/owl/handouts/active-passive-voice.html

http://grammar.englishclub.com/verbs-voice.htm

http://www.law.cuny.edu/wc/multilingual/active_passive.html

http://jade.ccccd.edu/cobb/passive.html

http://www.english.uiuc.edu/cws/wworkshop/grammar/active_and _passive_voice.htm
http://uark.edu/campus-resources/qwrtcntr/resources/handouts /activepassive.htm
http://www.geocities.com/Athens/Atrium/5852/Voices/active_pa ssive.html

http://webster.commnet.edu/grammar/passive.htm

(Countributed by David)

Note: You can add more links in comments, We will update it asap.

In an examination there are three multiple choice questions and each questions has 4 choices. Number of sequences in which students can fail to get all answers correct ?

A) 11
B) 15
C) 63
D) 80
E) 83

The number of different arrangements that can be made with the letters of the word ”GRATITUDE” in which the T’s are together?

A) 9!*2!
B) 8!
C) 9!
D) 81*2!
E) None of these

In order to increase revenues, an airport plans to change the parking fees it charges at its hourly parking lots. Rather than charging $2.00 for the first two-hour period, or part thereof, and $1.00 for each hour thereafter, the airport will charge $4.00 for the first four-hour period, or part thereof, and $1.00 for each hour thereafter.

Which of the following is a consideration that, if true, suggests that the plan will be successful in increasing revenues?

(A) Very few people who park their cars at the hourly parking lot at the airport leave their cars for more than two hours at a time.
(B) Over the past several years, the cost to the airport of operating its hourly parking facilities has been greater than the revenues it has received from them.
(C) People who leave their cars at the airport while on a trip generally park their cars in lots that charge by the day rather than by the hour.
(D) A significant portion of the money spent to operate the airport parking lot is spent to maintain the facilities rather than to pay the salaries of the personnel who collect the parking fees.
(E) The hourly parking lots at the airport have recently been expanded and are therefore
rarely filled to capacity.

Demographers doing research for an international economics newsletter claim that the average percapita income in the country of Kuptala is substantially lower than that in the country of Bahlton.They also claim, however, that whereas poverty is relatively rare in Kuptala, over half the population of Bahlton lives in extreme poverty. At least one of the demographers’ claims must, therefore, be wrong.
The argument above is most vulnerable to which of the following criticisms?
(A) It rejects an empirical claim about the average per capita incomes in the two countries without making any attempt to discredit that claim by offering additional economic evidence.
(B) It treats the vague term “poverty” as though it had a precise and universally accepted meaning.
(C) It overlooks the possibility that the number of people in the two countries who live in poverty could be the same even though the percentages of the two populations that live in poverty differ markedly.
(D) It fails to show that wealth and poverty have the same social significance in Kuptala as in Bahlton.
(E) It does not consider the possibility that incomes in Kuptala, unlike those in Bahlton, might all be very close to the country’s average per capita income.

What is the value of the integer k?
(1) k + 3 > 0
(2) k^4 =< 0

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient

If n > 0, which is greater, 20 percent of n or 10 percent of the sum of n and 05 ?
(1)) n < 01
(2)) n > 001

A ) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
B ) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
C ) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
D ) EACH statement ALONE is sufficient
E ) Statements (1) and (2) TOGETHER are NOT sufficient

By the mid-fourteenth century, professional associations of canon lawyers (legal advocates in Christian ecclesiastical courts, which dealt with cases involving marriage, inheritance, and other issues) had appeared in most of Western Europe, and a body of professional standards had been defined for them. One might expect that the professional associations would play a prominent role in enforcing these standards of conduct, as other guilds often did, and as modern professional associations do, but that seems not to have happened. Advocates� professional organizations showed little fervor for disciplining their erring members. Some even attempted to hobble efforts at enforcement. The Florentine guild of lawyers, for example, forbade its members to play any role in disciplinary proceedings against other guild members. In the few recorded episodes of disciplinary enforcement, the initiative for disciplinary action apparently came from a dissatisfied client, not from fellow lawyers.
At first glance, there seem to be two possible explanations for the rarity of disciplinary proceedings. Medieval canon lawyers may have generally observed the standards of professional conduct scrupulously. Alternatively, it is possible that deviations from the established standards of behavior were not uncommon, but that canonical disciplinary mechanisms were so inefficient that most delinquents escaped detection and punishment.

Two considerations make it clear that the second of these explanations is more plausible. First, the English civil law courts, whose ethical standards were similar to those of ecclesiastical courts, show many more examples of disciplinary actions against legal practitioners than do the records of church courts. This discrepancy could well indicate that the disciplinary mechanisms of the civil courts functioned more efficiently than those of the church courts. The alternative inference, namely, that ecclesiastical advocates were less prone to ethical lapses than their counterparts in the civil courts, seems inherently weak, especially since there was some overlap of personnel between the civil bar and the ecclesiastical bar.

Second, church authorities themselves complained about the failure of advocates to measure up to ethical standards and deplored the shortcomings of the disciplinary system. Thus the Council of Basel declared that canon lawyers failed to adhere to the ethical prescriptions laid down in numerous papal constitutions and directed Cardinal Cesarian to address the problem. In England, where medieval church records are extraordinarily rich, similar complaints about the failure of the disciplinary system to reform unethical practices were very common.
Such criticisms seem to have had a paradoxical result, for they apparently reinforced the professional solidarity of lawyers at the expense of the enforcement of ethical standards. Thus the profession�s critics may actually have induced advocates to organize professional associations for self-defense. The critics� attacks may also have persuaded lawyers to assign a higher priority to defending themselves against attacks by nonprofessionals than to disciplining wayward members within their own ranks.

1) Which one of the following best states the main conclusion of the passage?
(A) Professional organizations of medieval canon lawyers probably only enforced ethical standards among their own members when provoked to do so by outside criticisms.
(B) Professional organizations of medieval civil lawyers seem to have maintained stricter ethical standards for their own members than did professional organizations of medieval canon lawyers.
(C) Professional organizations of medieval canon lawyers apparently served to defend their members against critics� attacks rather than to enforce ethical standards.
(D) The ethical standards maintained by professional associations of medieval canon lawyers were chiefly laid down in papal constitutions.
(E) Ethical standards for medieval canon lawyers were not laid down until professional organizations for these lawyers had been formed.

2) According to the passage, which one of the following statements about law courts in medieval England is true?
(A) Some English lawyers who practiced in civil courts also practiced in church courts, but others served exclusively in one court or the other.
(B) English canon lawyers were more likely to initiate disciplinary proceedings against their colleagues than were English civil lawyers.
(C) English civil lawyers maintained more stringent ethical standards than did civil lawyers in the rest of Europe.
(D) English ecclesiastical courts had originally been modeled upon English civil courts.
(E) English ecclesiastical courts kept richer and more thorough records than did English civil courts.

3) The author refers to the Florentine guild of lawyers in the first paragraph most probably in order to
(A) introduce a theory about to be promoted
(B) illustrate the type of action referred to in the previous sentence
(C) underline the universality of a method discussed throughout the paragraph
(D) point out a flaw in an argument presented earlier in the paragraph
(E) rebut an anticipated objection to a thesis just proposed

4) The author refers to the Council of Basel (line 47) primarily in order to
(A) provide an example of the type of action needed to establish professional standards for canon lawyers
(B) contrast the reactions of English church authorities with the reactions of other bodies to violations of professional standards by canon lawyers
(C) bolster the argument that violations of professional standards by canon lawyers did take place
(D) explain how rules of conduct for canon lawyers were established
(E) describe the development of a disciplinary system to enforce professional standards among canon lawyers

5) According to the information in the passage, for which one of the following ethical violations would documentation of disciplinary action against a canon lawyer be most likely to exist?
(A) betraying a client�s secrets to the opposing party
(B) bribing the judge to rule in favor of a client
(C) misrepresenting credentials in order to gain admission to the lawyers� guild
(D) spreading rumors in order to discredit an opposing lawyer
(E) knowingly helping a client to misrepresent the truth

6) Which one of the following is most analogous to the �professional solidarity� referred to in passage ?

(A) Members of a teachers� union go on strike when they believe one of their colleagues to be falsely accused of using an inappropriate textbook.
(B) In order to protect the reputation of the press in the face of a largely hostile public, a journalist conceals distortions in a colleague�s news article.
(C) Several dozen recording artists agree to participate in a concert to benefit an endangered environmental habitat.
(D) In order to expedite governmental approval of a drug, a government official is persuaded to look the other way when a pharmaceutical manufacturer conceals evidence that the drug may have minor side effects.
(E) A popular politician agrees to campaign for another, less popular politician belonging to the same political party.

7) The passage suggests that which one of the following is most likely to have been true of medieval guilds?
(A) Few guilds of any importance existed before the mid-fourteenth century.
(B) Many medieval guilds exercised influence over the actions of their members.
(C) Most medieval guilds maintained more exacting ethical standards than did the associations of canon lawyers.
(D) Medieval guilds found it difficult to enforce discipline among their members.
(E) The ethical standards of medieval guilds varied from one city to another.

The author would be most likely to agree with which one of the following regarding the hypothesis that medieval canon lawyers observed standards of professional conduct scrupulously?
(A) It is untrue because it is contradicted by documents obtained from the ecclesiastical courts.
(B) It is unlikely because it describes behavior markedly different from behavior observed in the same situation in modern society.
(C) It is unlikely because it describes behavior markedly different from behavior observed in a similar area of medieval society.
(D) It is impossible to assess intelligently because of the dearth of civil and ecclesiastical documents.
(E) It is directly supported by documents obtained from civil and ecclesiastical courts.