觉得第九套管挺难的~好多题目都不懂~ Q2: Guy’s net income equals his gross income minus his deductions. By what percent did Guy’s net income change on January 1, 1989, when both his gross income and his deductions increased? (1) Guy’s gross income increased by 4 percent on January 1, 1989. (2) Guy’s deductions increased by 15 percent on January 1, 1989.不知道这两个是怎么推导出来的,不晓得是不是对题目有理解有问题
答案~E. Statements (1) and (2) TOGETHER are NOT sufficient.Q7:题目不明白 A company has assigned a distinct 3-digit code number to each of its 330 employees. Each code number was formed from the digits
2, 3, 4, 5, 6, 7, 8, 9
and no digit appears more than once in any one code number. How many unassigned code numbers are there?
A. 6 B. 58 C. 174 D. 182 E. 399 Answer: A Q20:完全不会~题目不清楚也不会做
| Favorable | Unfavorable | Not Sure | Candidate M | 40 | 20 | 40 | Candidate N | 30 | 35 | 35 |
The table above shows the results of a survey of 100 voters each responded “favorable” or “unfavorable” or “not sure” when asked about their impressions of candidate M and of candidate N. What was the number of voters who responded “favorable” for both candidates? (1) The number of voters who did not respond “favorable” for either candidate was 40. (2) The number of voters who responded “unfavorable” for both candidates was 10.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. Q23: When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time? 为什么不选A呢?
A. 1/8 B. 1/4
Answer: BQ25:题目也不是很理解~ If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be
E. 14
Q26:不会~感觉题目就没有理解~ 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. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
Q34: What is the value of the integer n? (1) n(n + 2) = 15 为什么不行? (2) (n + 2)n = 125 B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
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