If a committee of 3 people is to be selected from among 5 married couples so that the committee does not include two people who are married to each other, how many such committees are possible?
A.20
B.40
C.50
D.80
E.120
Answer: D
2
In the xy-plane, the point (-2, -3) is the center of a circle.The point (-2, 1) lies inside the circle and the point (4, -3) lies outside the circle.If the radius r of the circle is an integer, then r =
A.6
B.5
C.4
D.3
E.2
Answer: B
3
In a survey of 200 college graduates, 30 percent said they had received student loans during their college careers, and 40 percent said they had received scholarships.What percent of those surveyed said that they had received neither student loans nor scholarships during their college careers?
(1)25 percent of those surveyed said that they had received scholarships but no loans.
(2)50 percent of those surveyed who said that they had received loans also said that they had received scholarships. （题目有误吧，为啥会是50％，超过30％和40％呢？？？)
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:BD
4 A certain company assigns employees to offices in such a way that some of the offices can be empty and more than one employee can be assigned to an office.In how many ways can the company assign 3 employees to 2 different offices?
A.5
B.6
C.7
D.8
E.9
Answer: D
5
Joanna bought only $0.15 stamps and $0.29 stamps.How many $0.15 stamps did she buy?
(1)She bought $4.40 worth of stamps.
(2)She bought an equal number of $0.15 stamps and $0.29 stamps.
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: D
4 A certain company assigns employees to offices in such a way that some of the offices can be empty and more than one employee can be assigned to an office.In how many ways can the company assign 3 employees to 2 different offices?
A.5
B.6
C.7
D.8
E.9
Answer: D
5
Joanna bought only $0.15 stamps and $0.29 stamps.How many $0.15 stamps did she buy?
(1)She bought $4.40 worth of stamps.
(2)She bought an equal number of $0.15 stamps and $0.29 stamps.
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.
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发表于 2009-7-11 00:07:00
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