求助GWD13-7，22

mu1huizi

Q7:

For a certain race, 3 teams were allowed to enter 3 members each.  A team earned 6 – n points whenever one of its members finished in nth place, where 1 ≤ n ≤ 5.  There were no ties, disqualifications, or withdrawals.  If no team earned more than 6 points, what is the least possible score a team could have earned?



A.   0

B.    1

C.   2

D.   3

E.    4

Answer: D
Q23:

In the decimal representation of x, where 0 < x < 1, is the tenths digit if x
nonzero?


(1) 16x is an integer.

(2) 8x is an integer.

               

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

Q23:

In the decimal representation of x, where 0 < x < 1, is the tenths digit if x
nonzero?


(1) 16x is an integer.

(2) 8x is an integer.

               

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