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выше 700?Важные практические советы по достижению желаемого результата

27.01.2011



Спикеры MBA WebinarЕлена Нещерет

Старший преподаватель

ПреподаетTOEFL/GMAT/IELTS.

Собственные результаты

GMAT: [720/800]TOEFL: [116/120]

IELTS: [8,5/9]

Ольга Москаленко GMAT консультантQuantitative Part

Собственные результаты

GMAT: [710/800]93% percentile

Quantitative Part.



Секция Типы вопросов Продолжительность Количество вопросов

Analytical Writing Assessment (письменное эссе на четко заданную тему)

60 минут Два письменных задания

Quantitative (математические задания)

Problem Solving Data Sufficiency

75 минут 37 вопросов

Verbal (специализированный тест на знание и понимание английского языка)

Sentence CorrectionReading ComprehensionCritical Reasoning

75 минут 41 вопрос

Структура GMAT



Quantitative Part1. Problem Solving2. Data Sufficiency



Problem Solving. Task

Find the value of (p-1)3 if p =

A)

B)

C)

D)

E)



Problem Solving. Explanation

Step 1. Simplify the fractions:

As a result

p =

Step 2.

p-1=

Finally, (p-1)3=

The correct answer is B.



Data Sufficiency. Task

If n is a member of the set {33, 36, 38, 39, 41, 42}, what is the value of n?

(1) n is even(2) n is a multiple of 3

(A) Statement (1) ALONE is sufficient, but Statement (2) alone is not sufficient(B) (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



Data Sufficiency. Explanation

The correct answer is E.

Step 1:Analyze the first statement alone. If n is even, then it can equal to 36, 38 or 42. Not sufficient.Step 2:Analyze the second statement alone. If n is a multiple of 3, then it can be 33, 36, 39 or 42. Not sufficient.Step 3:Analyze the two statements taken together. If n is even and it is a multiple of 3 then it can be 36 or 42. Thus, even taken together the statements are not sufficient.

.



Verbal Part1. Sentence Correction2. Reading Comprehension3. Critical Reasoning



Reading Comprehension. TaskPassage 1I refer to the thousands of pottery vessels and ancient lamps that are essentially duplicates of one another. In one small excavation in Cyprus, archaeologists recently uncovered 2,000 virtually indistinguishable small jugs in a single courtyard. Even precious royal seal impressions known as l’melekh handles have been found in abundance —more than 4,000 examples so far.

The basements of museums are simply not large enough to store the artifacts that are likely to be discovered in the future. There is not enough money even to catalog the finds; as a result, they cannot be found again and become as inaccessible as if they had never been discovered. Indeed, with the help of a computer, sold artifacts could be more accessible than are the pieces stored in bulging museum basements. Prior to sale, each could be photographed and the list of the purchasers could be maintained on the computer. A purchaser could even be required to agree to return the piece if it should become needed for scientific purposes.

1. Which of the following is mentioned in the passage as a disadvantage of storing artifacts in museum basements?

(A) Museum officials rarely allow scholars access to such artifacts.(B) Space that could be better used for display is taken up for storage.(C) Artifacts discovered in one excavation often become separated from each other.(D) Such artifacts are often damaged by variations in temperature and humidity.(E) Such artifacts often remain uncataloged and thus cannot be located once they are put in storage.



Critical Reasoning. Task

In recent years, many cabinetmakers have been winning acclaim as artists. But since furniture must be useful, cabinetmakers must exercise their craft with an eye to the practical utility of their product. For this reason, cabinetmaking is not art. Which of the following is an assumption that supports drawing the conclusion above from the reason given for that conclusion? (A) Some furniture is made to be placed in museums, where it will not be used by anyone.(B) Some cabinetmakers are more concerned than others with the practical utility of the products they produce.(C) Cabinetmakers should be more concerned with the practical utility of their products than they currently are.(D) An object is not an art object if its maker pays attention to the object’s practical utility.(E) Artists are not concerned with the monetary value of their products.



Sentence Corrections. Task

Joachim Raff and Giacomo Meyerbeer are examples of the kind of composer who receives popular acclaim while living, often goes into decline after death, and never regains popularity again. (A) often goes into decline after death, and never regains popularity again(B) whose reputation declines after death and never regains its status again(C) but whose reputation declines after death and never regains its former status(D) who declines in reputation after death and who never regained popularity again(E) then has declined in reputation after death and never regained popularity



Quantitative Part1. Problem Solving2. Data Sufficiency




A) √(2 - x)

B) 2 × x - 6 + √(2 - x)

C) √(2 - x) + (x - 3)

D) 2 × x - 6 + √(x - 2)

E) x + √(x - 2)

2. What is √(x2 - 6 × x + 9) + √(2 - x) + (x - 3) if each term in this expression is well defined?




The correct answer is A.

Step 1:x2 - 6 × x + 9=(x-3)2

Step 2:√(x2 - 6 × x + 9) = √(x-3)2=|x-3|NOTE: √(a2)=|a|

Step 3:“… each term in this expression is well defined” means, that √(2 - x) is well defined:2 – x ≥ 0 or x ≤ 2, hence x – 3 ≤ -1, which means, that |x-3| = - (x - 3) = 3 - x

Step 4:√(x2 - 6 × x + 9) + √(2 - x) + (x - 3) = 3 - x + √(2 - x) + x - 3=√(2 - x) .




A) 30%

B) 33 1/3%

C) 37 1/2%

D) 40 %

E) 50%

3. Solution Y is 30 percent liquid X and 70 percent water. If 2 kilograms of water evaporate from 8 kilograms of solution Y and 2 kilograms of solution Y are added to the remaining 6 kilograms of liquid, what percent of this new solution is liquid X?




The correct answer is C.

Step 1: 8 kilograms of Y contain 0.38 = 2.4 kilograms of acid.

Step 2: After evaporating of water 6 kilograms of Y contain the same 2.4 kilograms of acid.

Step 3: After adding 2 kilos of solution Y, 8 kilos of mixture contain 2.4+0.32=2.4+0.6=3 kilos of acid.

Step 4: Finally,

Concentration of the substance =

.




P S

R

Q 5. In the figure above the measure of angle PRS is how many degrees greater than the measure of angle PQR?

(1)The measure of angle QPR is 30W.(2)The sum of the measures of angles

PQR and PRQ is 150W.

(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 correct answer is D.

Step 1:Interpret the question.The key to this problem is the fact that the exterior angle of a triangle equals to the sum of two angles of the triangle not neighbouring with it.

.

For the triangle PRQ in our problem angle PRS is an exterior angle, hence

Or

Or

In fact, we are asked about the angle QPR.

Step 2:Analyze the first statement alone. The measure of angle QPR is 30W - that is the answer to our question.The first statement is sufficient.

Step 3:Analyze the second statement alone.The sum of the measures of angles PQR and PRQ is 150W, hence angle QPR=180W-150W=30W.The second statement is sufficient.




6. Henry purchased 3 items during a sale. He received a 20 percent discount off the regular price of the most expensive item and 10 percent discount off the regular price of each of the other 2 items. Was the total amount of the 3 discounts greater than 15 percent of the sum of the regular prices of the 3 items?

(1) The regular price of the most expensive item was $50, and the regular price of the next most expensive item was $20(2) The regular price of the least expensive item was $15

(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




Step 1: interpret the question of the problem.Let’s x, y and z be the prices of the items from the most expensive to the least expensive. The discount Henry received from the three items together equals

0.2x + 0.1y + 0.1z 15 percent of the sum of the regular prices of the 3 items equals

0.15(x + y + z)Our question is whether

0.2x+0.1y+0.1z > 0.15(x + y + z)0.2x+0.1y+0.1z > 0.15x + 0.15y + 0.15z

0.05x – 0.05y – 0.05z > 0x – y – z > 0

.




Step 2:From the first statement we know, thatx=50, y=20. Substitute the values: 50 – 20 – z > 030 – z > 0z < 30

This is definitely true, since z is the least expensive item.The first statement is sufficient.

.

Step 3:From the second statement we know, that z=15. But this information is not sufficient to answer the question.

The correct answer is A.



Verbal Part1. Sentence Correction2. Reading Comprehension3. Critical Reasoning



Passage 2All the cells in a particular plant start out with the same complement of genes. How then can these cells differentiate and form structures as different as roots, stems, leaves, and fruits? The answer is that only a small subset of the genes in a particular kind of cell are expressed, or turned on, at a given time. This is accomplished by a complex system of chemical messengers that in plants include hormones and other regulatory molecules. Five major hormones have been identified: auxin, abscisic acid, cytokinin, ethylene, and gibberellin. Studies of plants have now identified a new class of regulatory molecules called oligosaccharins.

The pleiotropy of the five well-studied plant hormones is somewhat analogous to that of certain hormones in animals. For example, hormones from the hypothalamus in the brain stimulate the anteriorlobe of the pituitary gland to synthesize and release many different hormones, one of which stimulates the release of hormones from the adrenal cortex. These hormones have specific effects on target organs all over the body. One hormone stimulates the thyroid gland, for example, another the ovarian follicle cells, and so forth. In other words, there is a hierarchy of hormones. Such a hierarchy may also exist in plants. Oligosaccharins are fragments of the cell wall released by enzymes: different enzymes release different oligosaccharins. There are indications that pleiotropic plant hormones may actually function by activating the enzymes that release these other, more specific chemical messengers from the cell wall.

2. The passage suggests that which of the following is a function likely to be performed by an oligosaccharin? (A) To stimulate a particular plant cell to become part of a plant’s root system(B) To stimulate the walls of a particular cell to produce other oligosaccharins(C) To activate enzymes that release specificchemical messengers from plant cell walls(D) To duplicate the gene complement in a particular plant cell(E) To produce multiple effects on a particular subsystem of plant cells.



Critical Reasoning. Task

4. Many people suffer an allergic reaction to certain sulfi tes, including those that are commonly added to wine as preservatives. However, since there are several winemakers who add sulfi tes to none of the wines they produce, people who would like to drink wine but are allergic to sulfi tes can drink wines produced by these winemakers without risking an allergic reaction to sulfi tes. Which of the following is an assumption on which the argument depends? (A) These winemakers have been able to duplicate the preservative effect produced by adding sulfi tes by means that do not involve adding any potentially allergenic substances to their wine.(B) Not all forms of sulfi te are equally likely to produce the allergic reaction.(C) Wine is the only beverage to which sulfi tes are commonly added.(D) Apart from sulfi tes, there are no substances commonly present in wine that give rise to an allergic reaction.(E) Sulfi tes are not naturally present in the wines produced by these winemakers in amounts large enough to produce an allergic reaction in someone who drinks these wines.




5. Rising inventories, when unaccompanied correspondingly by increases in sales, can lead to production cutbacks that would hamper economic growth. (A) when unaccompanied correspondingly by increases in sales, can lead(B) when not accompanied by corresponding increases in sales, possibly leads(C) when they were unaccompanied by corresponding sales increases, can lead(D) if not accompanied by correspondingly increased sales, possibly leads(E) if not accompanied by corresponding increases in sales, can lead




7. Whereas in mammals the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, in birds the tubes form a random pattern. (A) Whereas in mammals the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, in birds the tubes(B) Whereas the tiny tubes for the conveying of nutrients to bone cells are arrayed in mammals in parallel lines, birds have tubes that(C) Unlike mammals, where the tiny tubes for conveying nutrients to bone cells are arrayed in parallel lines, birds’ tubes(D) Unlike mammals, in whom the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, the tubes in birds(E) Unlike the tiny tubes that convey nutrients to bone cells, which in mammals are arrayed in parallel lines, in birds the tubes

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