GMAT Prep Quiz 10 2x
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Thorough review is critical to the learning process and for most people should take a significant amount of time (and effort!) potentially equally or surpassing the amount of time taken to do the question set.
- Redo questions that you got wrong or struggled on without looking at the answers or explanations. Think. Rethink. Push yourself. Put pen to paper. Don’t review with only your eyes!
- Once you’ve solved or if you aren’t able to solve in about 10 minutes carefully review the explanation (if provided). Again, put pen to paper and redo the question along with the explanation.
- If we haven’t provided an explanation or if our explanation didn’t clear up your doubts google the first few words of the question and confirm the solution on the GMAT forums.
- Except for CR and RC, take a screenshot and add it to your dropbox review folder so you can easily revisit the question when assigned review in your HW schedule.
- Bring questions that you still find difficult to QA or to our sessions. For sessions add the screenshots to the “review in session” folder in your dropbox.
Here’s a video outlining the review process: https://www.youtube.com/edit?o=U&video_id=X6k3niNoGuA
Question 1 of 20
\(2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8\) =CorrectIncorrect
Question 2 of 20
For a certain race, 3 teams were allowed to enter 3 members each. A team earned 6 – n points whenever one of its members finished in nth place, where 1 <= n <= 5. There were no ties, disqualifications, or withdrawals. If no team earned more than 6 points, what is the least possible score a team could have earned?CorrectIncorrect
Question 3 of 20
What is the value of \(a^4 – b^4\)?
(1) \(a^2 – b^2\) = 16
(2) a + b = 8CorrectIncorrect
Question 4 of 20
A rectangular region has a fence along three sides and a wall along the fourth side. The fenced side opposite the wall is twice the length of each of the other two fenced sides. If the area of the rectangular region is 128 square feet, what is the total length of the fence, in feet?CorrectIncorrect
Question 5 of 20
List S and list T each contain 5 positive integers, and for each list the average (arithmetic mean) of the integers in the list is 40. If the integers 30, 40, and 50 are in both lists, is the standard deviation of the integers in list S greater than the standard deviation of the integers in list T?
(1) The integer 25 is in list S.
(2) The integer 45 is in list T.CorrectIncorrect
Question 6 of 20
In the rectangular coordinate system, are the points (r, s) and (u, v) equidistant from the origin?
(1) r + s = 1
(2) u = 1 – r and v = 1 – s.CorrectIncorrect
Question 7 of 20
In May, Xiang sold 15 used cars. For these 15 cars, the range of the selling prices was $15,000 and the lowest selling price was $4,500. In June, Xiang sold 10 used cars. For these 10 cars, the range of the selling prices was $16,500 and the lowest selling price was $6,100. What was the range of the selling prices of the 25 used cars sold by Xiang in May and June?CorrectIncorrect
Question 8 of 20
How much time did it take a certain car to travel 400 kilometers?
(1) The car traveled the first 200 kilometers in 2.5 hours.
(2) If the car’s average speed had been 20 kilometers per hour greater than it was, it would have traveled the 400
kilometers in 1 hour less time than it did.CorrectIncorrect
Question 9 of 20
A certain store found that last year the average (arithmetic mean) monthly sales from January through October was $120,000. In November and December, the monthly sales were 3 and 5 times, respectively, the average for the other 10 months. What was the store’s average monthly sales last year?CorrectIncorrect
Question 10 of 20
For each hour of production, a certain factory requires 1 assembly line worker for every 25 units to be produced in that hour. The factory also requires 12 managers regardless of the number of units to be produced. Which of the following expressions represents the total number of assembly line workers and managers that this factory requires to produce 50N units in one hour, where N is a positive integer?CorrectIncorrect
Question 11 of 20
Do more than 50 percent of the children in a certain group have brown hair?
(1) 70 percent of the boys in the group have brown hair.
(2) 30 percent of the children in the group are girls with brown hair.CorrectIncorrect
Question 12 of 20
If n is a positive integer, which of the following must be an even integer?CorrectIncorrect
Question 13 of 20
If (400)(6,000) = (240)(\(100^x\)), what is the value of x ?CorrectIncorrect
Question 14 of 20
A television network sells advertising time on a certain program at the rate of $10,000 per minute. If the program is shown once a day for 5 days a week, what is the cost of advertising on this program for 3 weeks at 30 seconds per day?CorrectIncorrect
Question 15 of 20
A stamping machine produces 100 gaskets per hour. When this machine works with a newer machine, the two machines, working simultaneously and independently at their respective constant rates, produce a total of 2,000 gaskets in 8 hours. How many gaskets does the newer machine produce per hour?CorrectIncorrect
Question 16 of 20
Robin split a total of $24,000 between two investments, X and Y. If investment Y earns 7 percent simple annual interest,
how much of the total did Robin put into investment Y?
(1) Each investment earns the same dollar amount of interest annually.
(2) Investment X earns 5 percent simple annual interest.CorrectIncorrect
Question 17 of 20
In a certain year the United Nations’ total expenditures were $1.6 billion. Of this amount, 67.8 percent was paid by the 6
highest-contributing countries, and the balance was paid by the remaining 153 countries. Was Country X among the 6
(1) 56 percent of the total expenditures was paid by the 4 highest-contributing countries, each of which paid more than
(2) Country X paid 4.8 percent of the total expenditures.CorrectIncorrect
Question 18 of 20
If v and w are different integers, does v = 0?
(1) vw= \(v^2\)
(2) w = 2CorrectIncorrect
Question 19 of 20
Some of the students enrolled at College T are part-time students and the rest are full-time students. By what percent did
the number of full-time students enrolled at College T increase from the fall of 1999 to the fall of 2000?
(1) There were 50 more full-time students enrolled at College T in the fall of 2000 than in the fall of 1999.
(2) The total number of students enrolled at College T increased by 5 percent from the fall of 1999 to the fall of 2000.CorrectIncorrect
Question 20 of 20
Is √\((x-5)^2\) = 5 – x
(1) -x|x| > 0
(2) 5 – x > 0CorrectIncorrect