题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
161	If the average (arithmetic mean) of the five numbers x, 7, 2, 16, and 11 is equal to the median of the five numbers, what is the value of x ?(1) 7 < x < 11(2) x is the median of the five numbers.
162	What fraction of this year's graduating students at a certain college are males?(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transferred from another college.(2) Of this year's graduating students, 25 percent transferred from another college.
163	Linda put an amount of money into each of two new investments, A and B, that pay simple annual interest. If the annual interest rate of investment B is 1.5 times that of investment A, what amount did Linda put into investment A ?(1) The interest for 1 year is $50 for investment A and $150 for investment B.(2) The amount that Linda put into investment B is twice the amount that she put into investment A.
164	At a two-day seminar, 90 percent of those registered attended the seminar on the first day. What percent of those registered did not attend the seminar on either day?(1) A total of 1,000 people registered for the two-day seminar.(2) Of those registered, 80 percent attended the seminar on the second day.
165	Of the 1,400 college teachers surveyed, 42 percent said that they considered engaging in research an essential goal. How many of the college teachers surveyed were women?(1) In the survey, 36 percent of the men and 50 percent of the women said that they considered engaging in research an essential goal.(2) In the survey, 288 men said that they considered engaging in research an essential goal.
166	In the xy-coordinate plane, the slope of line l is $$\frac34$$ . Does line l pass through the point (- 2/3 , 1/2 )?(1) Line l passes through the point (4,4).(2) Line l passes through the point (-4,-2).
167	If x, y, and z are integers and xy + z is an odd integer, is x an even integer?(1) xy + xz is an even integer.(2) y + xz is an odd integer.
168	On the number line, the distance between x and y is greater than the distance between x and z. Does z lie between x and y on the number line?(1) xyz < 0(2) xy < 0
169	If the integers a and n are greater than 1 and the product of the first 8 positive integers is a multiple of $$a^n$$, what is the value of a ?(1) $$a^n=64$$(2) n =6
170	If n and t are positive integers, what is the greatest prime factor of the product nt ?(1) The greatest common factor of n and t is 5. (2) The least common multiple of n and t is 105.
171	Is \|x - y \| > \|x \| - \|y \| ?(1) y < x(2) xy < 0
172	If m, k, x, and y are positive numbers, is mx + ky > kx + my ?(1) m > k(2) x > y
173	If N is a positive integer, is the units digit of N equal to zero?(1) 14 and 35 are factors of N.(2) N = $$(2^5)(3^2)(5^7)(7^6)$$
174	In the xy-plane, what is the y-intercept of line l(1) The slope of line l is 3 times its y-intercept.(2) The x-intercept of line l is$$\frac{-1}{3}$$ .
175	The sum of the integers in list S is the same as the sum of the integers in list T. Does S contain more integers than T ?(1) The average (arithmetic mean) of the integers in S is less than the average of the integers in T.(2) The median of the integers in S is greater than the median of the integers in T.
176	If x and y are positive integers, is the product xy even?(1) 5x - 4y is even.(2) 6x + 7y is even.
177	If x and y are positive integers, what is the value of xy ? (1) The greatest common factor of x and y is 10.(2) The least common multiple of x and y is 180.
178	If there are more than two numbers in a certain list, is each of the numbers in the list equal to 0 ?(1) The product of any two numbers in the list is equal to 0.(2) The sum of any two numbers in the list is equal to 0.
179	A manufacturer conducted a survey to determine how many people buy products P and Q. What fraction of the people surveyed said that they buy neither product P nor product Q ?(1) 1/3 of the people surveyed said that they buy product P but not product Q.(2) 1/2 of the people surveyed said that they buy product Q.
180	Are x and y both positive?(1) 2x – 2y = 1(2) $$\frac{x}{y}>1$$

序号

题目内容

161

If the average (arithmetic mean) of the five numbers x, 7, 2, 16, and 11 is equal to the median of the five numbers, what is the value of x ?(1) 7 < x < 11(2) x is the median of the five numbers.

162

What fraction of this year's graduating students at a certain college are males?(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transferred from another college.(2) Of this year's graduating students, 25 percent transferred from another college.

163

Linda put an amount of money into each of two new investments, A and B, that pay simple annual interest. If the annual interest rate of investment B is 1.5 times that of investment A, what amount did Linda put into investment A ?(1) The interest for 1 year is $50 for investment A and $150 for investment B.(2) The amount that Linda put into investment B is twice the amount that she put into investment A.

164

At a two-day seminar, 90 percent of those registered attended the seminar on the first day. What percent of those registered did not attend the seminar on either day?(1) A total of 1,000 people registered for the two-day seminar.(2) Of those registered, 80 percent attended the seminar on the second day.

165

Of the 1,400 college teachers surveyed, 42 percent said that they considered engaging in research an essential goal. How many of the college teachers surveyed were women?(1) In the survey, 36 percent of the men and 50 percent of the women said that they considered engaging in research an essential goal.(2) In the survey, 288 men said that they considered engaging in research an essential goal.