GMAT涛涛版数学之二

2022-06-01 09:11:41

  在GMAT考试的整个过程中我们需要了解的就是在GMAT考试中我们应该如何应对数学相关问题,下面小编就

  Q9:

  A gardener is going to plant 2 red rosebushes and 2 white rosebushes. If the gardener is to select each of the bushes at random, one at a time, and plant them in a row, what is the probability that the 2 rosebushes in the middle of the row will be the red rosebushes?

  A. 1/12

  B. 1/6

  C. 1/5

  D. 1/3

  E. 1/2

  Answer: B

  Q10:

  A set of numbers has the property that for any number t in the set, t + 2 is in the set. If –1 is in the set, which of the following must also be in the set?

  I. -3

  II. 1

  III. 5

  A. I only

  B. II only

  C. I and II only

  D. II and III only

  E. I, II, and III

  Answer: D,

  Q11:

  In a corporation, 50 percent of the male employees and 40 percent of the female employees are at least 35 years old. If 42 percent of all the employees are at least 35 years old, what fraction of the employees in the corporation are females?

  A. 3/5

  B. 2/3

  C. 3/4

  D. 4/5

  E. 5/6

  Answer: D

  Q12:

  If n is an integer and 2 < n < 6, what is the value of n?

  (1) n is a factor of 15.

  (2) n is a factor of 21.

  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.

  Answer: B

  Q13:

  If x and y are positive, is 3x > 7y?

  (1) x > y + 4

  (2) -5x < -14y

  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.

  Answer: B

  Q14:

  If 1050 – 74 is written as an integer in base 10 notation, what is the sum of the digits in that integer?

  A. 424

  B. 433

  C. 440

  D. 449

  E. 467

  Answer: C,

  Q15:

  Ann, Carol, and Judy paid a total of $45 for their dinner at a restaurant. If Ann paid 2/5 of the total amount, Carol paid $17, and Judy paid the rest, what fraction of the total amount did Judy pay?

  A. 2/9

  B. 14/45

  C. 1/3

  D. 2/5

  E. 7/15

  Answer: A,

  Q16:

  If J, S, and V are points on the number line, what is the distance between S and V?

  (1) The distance between J and S is 20.

  (2) The distance between J and V is 25.

  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.

  Answer: E

  Q17:

  In Town X, 64 percent of the population are employed, and 48 percent of the population are employed males. What percent of the employed people in Town X are females?

  A. 16%

  B. 25%

  C. 32%

  D. 40%

  E. 52%

  Answer: B