GMAT Pop Quiz - MSN Encarta

Data Sufficiency
Twenty-seven employees of the Silver City Shoe Store worked at least one day this weekend, which was a normal two-day weekend. How many of these employees worked only one of the days?

1. Two more employees worked on Saturday than worked on Sunday.
2. Nineteen employees worked on Saturday, and seventeen employees worked on Sunday.

Statement (1) BY ITSELF is sufficient to answer the question, but statement (2) by itself is not.

Statement (2) BY ITSELF is sufficient to answer the question, but statement (1) by itself is not.

Statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, even though NEITHER statement BY ITSELF is sufficient.

EITHER statement BY ITSELF is sufficient to answer the question.

Statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question.

Problem Solving
Math figure (Image credit: Kaplan)

In semicircle O, PQ is parallel to OS. What is the measure of ÐROS?

34 degrees

36 degrees

54.5 degrees

72 degrees

73 degrees

Probability
A fair coin is tossed six times. What is the probability that exactly two heads will show?

15/64/

5/16/

1/3/

3/8/

15/32/

Sentence Correction
Directions: The following question consists of a sentence that is either partly or entirely underlined. Below it are five versions of the underlined portion of the sentence. The first of these duplicates the original version. The four other versions revise the underlined portion of the sentence. Read the sentence and the five choices carefully, and select the best version.

In 1981, chemists thought they discovered new uses for Styrofoam pellets which would greatly reduce the environmental damage, but subsequent studies convinced them that these new uses did not significantly reduce the emissions of ozone-destroying chlorofluorocarbons.

discovered new uses for Styrofoam pellets which would greatly reduce the environmental damage

discovered new uses for pellets, made of Styrofoam, which would greatly reduce environmental damage

had discovered new environmentally friendly uses for Styrofoam pellets

were going to reduce environmental damage greatly, had discovered new uses for Styrofoam pellets

were discovering new uses for Styrofoam pellets, and that this would greatly reduce environmental damage

Critical Reasoning
Parents of high school students argue that poor attendance is the result of poor motivation. If students' attitudes improve, regular attendance will result. The administration, they believe, should concentrate less on making stricter attendance policies and more on increasing students' learning.
Which of the following, if true, would most effectively weaken the parents' argument?

Motivation to learn can be improved at home, during time spent with parents.

The degree of interest in learning that a student develops is a direct result of the amount of time he or she spends in the classroom.

Making attendance policies stricter will merely increase students' motivation to attend class, not their interest in learning.

Showing a student how to be motivated is insufficient; the student must also accept responsibility for his or her decisions.

Unmotivated students do not perform as well in school as do other students.