OG19新题 题目总数：142 做题总人数：8255 平均准确率：75.1%
In the figure shown, is || ?(1) r = s(2) t = u
来源：OG21新题 276人已做 600难度 89.9%正确率
Did the population of Town C increase by at least 100 percent from the year 2000 to the year 2010 ?(1)The population of Town C in 2000 was 2/3 of the population in 2005.(2)The population of Town C increase by a greater number of people from 2005 to 2010 than it did from 2000 to 2005
来源：OG21新题 272人已做 其他难度 73.2%正确率
At a certain clothing store, customers who buy 2 shirts pay the regular price for the first shirt and a discounted price for the second shirt. The store makes the same profit from the sale of 2 shirts that it makes from the sale of 1 shirt at the regular price. For a customer who buys 2 shirts, what is the discounted price of the second shirt?(1) The regular price of each of the 2 shirts the customer buys at the clothing store is $16.(2) The cost to the clothing store of each of the 2 shirts the customer buys is $12.
来源：OG21新题 256人已做 其他难度 28.5%正确率
A certain computer company produces two different monitors, P and Q. In 2010, what was the net profit from the sale of the two monitors?(1) Of the company’s expenses in 2010, rent and utilities totaled $500,000.(2) In 2010, the company sold 50,000 units of monitor P at $300 per unit and 30,000 units of monitor Q at $650 per unit.
来源：OG21新题 254人已做 其他难度 52.8%正确率
What is the volume of the right circular cylinder X ?(1) The height of X is 20.(2) The base of X has area 25π.
来源：OG21新题 256人已做 其他难度 94.5%正确率
What is the value of z in the figure above?(1) x = 50(2) y = 35
来源：OG21新题 267人已做 其他难度 97.8%正确率
If all of the six faces of a concrete block are rectangular, what is the volume of the block?(1) Each of the four lateral faces of the block has an area of 200 square inches.(2) The top of the block is square and has an area of 400 square inches.
来源：OG21新题 268人已做 其他难度 80.6%正确率
There are 2 groups of students who took a history test. Was the average (arithmetic mean) score of the students in Group A higher than the average score of the students in Group B who took the test?(1) Of the students who took the test, 10 were in Group A and 12 were in Group B.(2) On the test, the highest score achieved was achieved by a Group B student and the lowest score achieved was achieved by a Group A student.
来源：OG21新题 279人已做 其他难度 95.7%正确率
In the xy-coordinate plane, what are the x-coordinates of the four vertices of square JKMN ?(1) J and M are on the x-axis, and K and N are on the y-axis.(2) The center of the square is at the origin.
来源：OG21新题 285人已做 其他难度 88.1%正确率
In the xy-coordinate plane above, what are the coordinates of point N ?(1) Triangle MNP is equilateral.(2) Point M has coordinates (−4,0).
来源：OG21新题 288人已做 其他难度 92.7%正确率
Because 70 percent of the people of India use wood as their sole fuel, ten million acres of forest have been lost there since 1960, resulting in wood now costing eight times as much to collect and distribute than in 1960.
In a blow to those who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added as the message is forwarded to others or sent back and forth.
With near to all tortilla chips made from corn kernels that have been heated in a solution of calcium hydroxide (lime), this removes the skin of the kernel so water can penetrate.
Many population studies have linked a high-salt diet to high rates of hypertension and shown that in societies where they consume little salt, their blood pressure typically does not rise with age.
The cactus is now heavily plundered in deserts in the southwestern United States, so much that enforcement agencies in five states have created special squads for its protection.
What is the remainder when the positive integer n is divided by the positive integer k, where k > 1 ?(1) n = (k + 1)^3(2) k = 5
In a certain high school, 80 percent of the seniors are taking calculus, and 60 percent of the seniors who are taking calculus are also taking physics. If 10 percent of the seniors are taking neither calculus nor physics, what percent of the seniors are taking physics?
The sides of a square region, measured to the nearest centimeter, are 6 centimeters long. The least possible value of the actual area of the square region is
If k and n are positive integers such that n > k, then k ! + (n − k) · (k − 1)! is equivalent to which of the following?
A certain one-day seminar consisted of a morning session and an afternoon session. If each of the 128 people attending the seminar attended at least one of the two sessions, how many of the people attended the morning session only?(1) 3/4 of the people attended both sessions. (2) 7/8 of the people attended the afternoon session.