2-29
if 10^50-74 is wriiten 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
2-30 (有圖)
In the figure, exch side of square ABCD has length 1,
the length of line segment CE is 1, and the length of line segment BE
is equal to the length of line segment DE. What is the area of the
triangular region BCE?
A. 1/3
B. [2^(1/2)]/4
c. 1/2
D. [2^(1/2)]/2
E. 3/4
ANSWER: B
3-14
How many seconds will it take for a car that is traveling at a
constant rate of 45 miles per hour to travel a distance of 22 yards?
(1 mile = 1,160 yards)
A. 8
B. 9
C. 10
D. 11
E. 12
Answer: C
3-15
(DS)If n and k are positive integers, is n/k an even integer?
(1) n is divisible by 8.
(2) k is divisible by 4.
Answer: E
3-18
Last year the price per share of Stock X increased by k percent
and the earnings per share of Stock X increased by m percent,
where k is greater than m. By what percent did the ratio of
price per share to earnings per share increase, in terms of k and m?
A. k/m %
B. (k-m) %
C. [100(k-m)]/(100+k) %
D. [100(k-m)]/(100+m) %
E. [100(k-m)]/(100+k+m) %
Answer: D
以上幾題想不到solution 希望有高手可以指引一下^^
謝謝~
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 218.211.223.41