[計量] 幾題計量算不出來...
遇到一些題目真的看不太懂或者算不出來...
懇求大大們幫忙解題~~(沒有任何讀書夥伴...)
Q10-3
11.A company that ships boxes to a total of 12 distribution centers uses
color coding to identify each center. If either a single color or a pair of
two diffierent color is chosen to represent each center and if each center is
uniquely represented by that choice of one or two colors, what is the minimum
number of colors needed for the coding? (Assume that the order of the colors
in a pair does not matter.)
(A)4 (B)5 (C)6 (D)12 (E)24
Ans:B
14.On a certain road, 10 percent of the motorists exceed the posted speed
limit and receive speeding tickets, but 20 percent of the motorists who
exceed the posted speed limit do not receive speeding tickets. What percent
of the motorists on that road exceed the posted speed limit?
(A)10+1/2 % (B)12+1/2 % (C)15% (D)22% (E)30%
Ans:B
18.Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum
X, is 2/3 full of oil. If all of the oil in drum X is poured into drum Y,
then drum Y will be filled to what fraction of its capacity?
(A)3/4 (B)5/6 (C)11/12 (D)7/6 (E)11/6
Ans:C
28.In a certain school, 40 more than 1/3 of all the student are taking a
science course and 1/4 of those taking a science course are talking physics.
If 1/8 of all the students in the school are taking physics, how many
students are in the school?
(A)240 (B)300 (C)480 (D)720 (E)960
Ans:A
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 58.114.214.204
推
03/24 23:30, , 1F
03/24 23:30, 1F
推
03/24 23:40, , 2F
03/24 23:40, 2F
→
03/24 23:41, , 3F
03/24 23:41, 3F
→
03/24 23:43, , 4F
03/24 23:43, 4F
→
03/25 00:50, , 5F
03/25 00:50, 5F
→
04/06 11:37, , 6F
04/06 11:37, 6F
→
04/06 11:38, , 7F
04/06 11:38, 7F
→
04/06 11:38, , 8F
04/06 11:38, 8F
討論串 (同標題文章)