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小的数学不才，希望大神门能够赐教：
这几道都是GWD第十三套题里面的数学部分
1. $10,000 is deposited in a certain account that pays r percent annual interest compounded annually, the amount D(t), in dollars, that the deposit will grow to in t years is given by D(t) = 10,000 {1+(r/100)}t.What amount will the deposit grow to in 3 years?
(1)D(t) = 11,000
(2)r =10
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.
为什么一也可以啊？？
2. 这个有个图，贴不上来，反正是GWD 13 Q19
Yesterday each of the 35 members of a certain task force spent some time working on project P.The graph shows the number of hours and the number of members who spent that number of hours working on project P yesterday.What was the median number of hours that the members of the task force spent working on project P yesterday?
A.2
B.3
C.4
D.5
E.6
3.
What is the median number of employees assigned per project for the projects at Company Z?
(1)25 percent of the projects at Company Z have 4 or more employees assigned to each project.
(2)35 percent of the projects at Company Z have 2 or fewer employees assigned to each project.
这种求median问题，小的完全不知道怎么做来着！求指点。。。 |
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发表于 2012-12-25 18:00:10
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