题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
61	Of the 60 animals on a certain farm, 2/3 are either pigs or cows. How many of the animals are cows? (1) The farm has more than twice as many cows as it has pigs. (2) The farm has more than 12 pigs.
62	In isosceles RST what is the measure of R(1) The measure of T is 100°. (2) The measure of S is 40°.
63	The cost of delivery for an order of desk chairs was $10.00 for the first chair, and $1.00 for each additional chair in the order. If an office manager placed an order for n desk chairs, is n > 24 ? (1) The delivery cost for the order totaled more than $30.00. (2) The average (arithmetic mean) delivery cost per chair of the n chairs was $1.36.
64	Are at least 10 percent of the people in Country X who are 65 years old or older employed? (1) In Country X, 11.3 percent of the population is 65 years old or older. (2) In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.
65	If x is a positive number less than 10, is z greater than the average (arithmetic mean) of x and 10 ? (1) On the number line, z is closer to 10 than it is to x. (2) z = 5x
66	In the finite sequence of positive integers $${K}_{1}$$, $${K}_{2}$$, $${K}_{3}$$....,$${K}_{9}$$each term after the second is the sum of the two terms immediately preceding it. If $${K}_{5}= 18$$, what is the value of $${K}_{9}$$?(1) $${K}_{4}={11}$$(2) $${K}_{6}={29}$$
67	Is x + y negative?(1)x is negative.(2)y is positive.
68	What is the tens digit of the positive integer r?(1) The tens digit of r/10 is 3.(2) The hundreds digit of 10r is 6.
69	In triangle ABC above, what is the length of side BC ? (1) Line segment AD has length 6. (2) x = 36
70	Is the integer x divisible by 6 ? (1) x + 3 is divisible by 3.(2) x + 3 is an odd number.
71	In the figure above, if x and y are each less than 90 and PS∥QR is the length of segment PQ less than the length of segment SR ?(1) x > y(2) x + y > 90
72	A bookstore that sells used books sells each of its paperback books for a certain price and each of its hardcover books for a certain price. If Joe, Maria, and Paul bought books in this store, how much did Maria pay for 1 paperback book and 1 hardcover book?(1) Joe bought 2 paperback books and 3 hardcover books for $12.50.(2) Paul bought 4 paperback books and 6 hardcover books for $25.00.
73	What is the average (arithmetic mean) of eleven consecutive integers?(1)The average of the first nine integers is 7.(2)The average of the last nine integers is 9.
74	If x and y are integers, what is the value of x + y ? (1) 690 < x < y < 696(2) 692 < x < y < 695
75	Is x less than 20 ?(1)The sum of x and y is less than 20.(2)y is less than 20.
76	Is the integer k divisible by 4 ? (1) 8k is divisible by 16. (2) 9k is divisible by 12.
77	If n is an integer between 10 and 99, is n ＜ 80 ?(1) The sum of the two digits of n is a prime number.(2) Each of the two digits of n is a prime number.
78	For each customer, a bakery charges p dollars for the first loaf of bread bought by the customer and charges q dollars for each additional loaf bought by the customer. What is the value of p ?(1) A customer who buys 2 loaves is charged 10 percent less per loaf than a customer who buys a single loaf. (2) A customer who buys 6 loaves of bread is charged 10 dollars.
79	If the terms of a sequence are$$t_1, t_2, t_3, . . . , t_n$$, what is the value of n ? (1) The sum of the n terms is 3,124. (2) The average (arithmetic mean) of the n terms is 4.
80	If x is a negative number, what is the value of x ? (1) $$x^2=1$$ (2)$$x^2+3x+2=0$$

序号

题目内容

Of the 60 animals on a certain farm, 2/3 are either pigs or cows. How many of the animals are cows? (1) The farm has more than twice as many cows as it has pigs. (2) The farm has more than 12 pigs.

In isosceles RST what is the measure of R(1) The measure of T is 100°. (2) The measure of S is 40°.

The cost of delivery for an order of desk chairs was $10.00 for the first chair, and $1.00 for each additional chair in the order. If an office manager placed an order for n desk chairs, is n > 24 ? (1) The delivery cost for the order totaled more than $30.00. (2) The average (arithmetic mean) delivery cost per chair of the n chairs was $1.36.

Are at least 10 percent of the people in Country X who are 65 years old or older employed? (1) In Country X, 11.3 percent of the population is 65 years old or older. (2) In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

If x is a positive number less than 10, is z greater than the average (arithmetic mean) of x and 10 ? (1) On the number line, z is closer to 10 than it is to x. (2) z = 5x

In the finite sequence of positive integers $${K}_{1}$$, $${K}_{2}$$, $${K}_{3}$$....,$${K}_{9}$$each term after the second is the sum of the two terms immediately preceding it. If $${K}_{5}= 18$$, what is the value of $${K}_{9}$$?(1) $${K}_{4}={11}$$(2) $${K}_{6}={29}$$

Is x + y negative?(1)x is negative.(2)y is positive.

What is the tens digit of the positive integer r?(1) The tens digit of r/10 is 3.(2) The hundreds digit of 10r is 6.