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新GRE考试数学模拟题解析详解(2)

2013-06-17 
读书人网精心为大家整理了新GRE考试数学模拟题解析详解,今后带来更多更全更新的教育考试类相关资料,希望对大家的考试能带来帮助!

  Multiple‐Choice Questions — Select One or More Answer Choices

  These questions are multiple‐choice questions that ask you to select one or more answer

  choices from a list of choices. A question may or may not specify the number of choices to select.

  Sample Questions

  Directions: Select one or more answer choices according to the specific question

  directions.

  If the question does not specify how many answer choices to select,

  select all that apply.

  The correct answer may be just one of the choices or may be as

  many as all of the choices, depending on the question.

  No credit is given unless you select all of the correct choices and no

  others.

  If the question specifies how many answer choices to select, select

  exactly that number of choices.

  1. Each employee of a certain company is in either Department X or Department Y, and

  there are more than twice as many employees in Department X as in Department Y. The average

  (arithmetic mean) salary is $25,000 for the employees in Department X and is $35,000 for the

  employees in Department Y. Which of the following amounts could be the average salary for all of

  the employees in the company?

  Indicate all such amounts.

  A. $26,000

  B. $28,000

  C. $29,000

  D. $30,000

  E. $31,000

  F. $32,000

  G. $34,000

  Answer: A ($26,000) and B ($28,000)

  2. If f, g, and h are positive integers, f is a factor of g, and g is a factor of h, which of the

  following statements must be true?

  Indicate all such statements.

  A. f is a factor of g squared.

  B. f is a factor of gh.

  C. f is a factor of h minus g.

  Answer: A (f is a factor of g squared), B (f is a factor of gh.), and C (f is a factor of

  h minus g)

  Numeric Entry Questions

  Questions of this type ask you either to enter the answer as an integer or a decimal in a

  single answer box or to enter it as a fraction in two separate boxes — one for the numerator and

  one for the denominator. In the computer‐administered test, the computer mouse and keyboard

  are used to enter the answer.

  Sample Questions

  Directions: Enter your answer in the answer box(es) below the question.

  Equivalent forms of the correct answer, such as 2.5 and 2.50, are all

  correct. Fractions do not need to be reduced to lowest terms.

  Enter the exact answer unless the question asks you to round your

  answer.

  1. If x = 10 to the power negative 1, what is the value of

  open parenthesis, x + the fraction 1 over x, close parenthesis, times, open

  parenthesis, 1 over x, close parenthesis?

  Answer Box

  Answer: 101

  2. A university admitted 100 students who transferred from other institutions. Of these

  students, 34 transferred from two‐year community colleges, 25 transferred from private

  four‐year institutions, and the rest transferred from public four‐year institutions. If two different

  students are to be selected at random from the 100 students, what is the probability that both

  students selected will be students who transferred from two‐year community colleges?

  Give your answer as a fraction.

  Fraction answer boxes

  Answer: 17 over 150 (or any equivalent fraction).

  Quantitative Comparison Questions

  Questions of this type ask the examinee to compare two quantities — Quantity A and

  Quantity B — and then determine which of four statements describes the comparison.

  Sample Questions

  Directions: Compare Quantity A and Quantity B, using the additional information given,

  if any. Select one of the following four answer choices.

  A. Quantity A is greater.

  B. Quantity B is greater.

  C. The two quantities are equal.

  D. The relationship cannot be determined from the information

  given.

  A symbol that appears more than once in a question has the same

  meaning throughout the question.

  1.

  Quantity A: x squared + 1

  Quantity B: 2x, minus 1

  A. Quantity A is greater.

  B. Quantity B is greater.

  C. The two quantities are equal.

  D. The relationship cannot be determined from the information given.

  Answer: A (Quantity A is greater.)


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