Search found 115 matches
How many positive factors?
How many different positive integers are factors of 441?
A) 4
B) 6
C) 7
D) 9
E) 11
- by LulaBrazilia
Sun Mar 09, 2014 6:32 pm- Forum: Problem Solving
- Topic: How many positive factors?
- Replies: 5
- Views: 9372
What is the value of k?
If n is a positive integer and k = 5.1*10^n, what is the value of k?
1) 6,000 < k < 500,000
2) k^2 = 2.601 * 10^9
- by LulaBrazilia
Fri Mar 07, 2014 10:58 am- Forum: Data Sufficiency
- Topic: What is the value of k?
- Replies: 4
- Views: 3270
Are all numbers equal?
Are all of the numbers in a certain list of 15 numbers equal?
1) The sum of all the numbers in the list is 60.
2) The sum of any 3 numbers in the list is 12.
- by LulaBrazilia
Fri Mar 07, 2014 10:56 am- Forum: Data Sufficiency
- Topic: Are all numbers equal?
- Replies: 2
- Views: 1430
Which cannot be true?
S is a set containing 9 different numbers. T is a set containing 8 different numbers, all of which are members of S. Which of the following statements cannot be true? A) The mean of S is equal to the mean of T. B) The median of S is equal to the median of T. C) The range of S is equal to the range o...
- by LulaBrazilia
Fri Mar 07, 2014 10:55 am- Forum: Problem Solving
- Topic: Which cannot be true?
- Replies: 3
- Views: 2359
How many even divisors?
If n=4p, where p is a prime number greater than 2, how many different positive even divisors does n have, including n?
A) 2
B) 3
C) 4
D) 6
E) 8
Is it safe to plug in? Is there a quick algebraic approach?
- by LulaBrazilia
Fri Mar 07, 2014 10:53 am- Forum: Problem Solving
- Topic: How many even divisors?
- Replies: 3
- Views: 1739
Predicting next year's inflation
Last year the rate of inflation was 1.2 percent, but during the current year it has been 4 percent. We can conclude that inflation is on an upward trend and the rate will be still higher next year. Which of the following, if true, most seriously weakens the conclusion above? (A) The inflation figure...
- by LulaBrazilia
Thu Mar 06, 2014 10:06 pm- Forum: Critical Reasoning
- Topic: Predicting next year's inflation
- Replies: 1
- Views: 1234
Robot satellites and space flights
Robot satellites relay important communications and identify weather patterns. Because the satellites can be repaired only in orbit, astronauts are needed to repair them. Without repairs, the satellites would eventually malfunction. Therefore, space flights carrying astronauts must continue. Which o...
- by LulaBrazilia
Thu Mar 06, 2014 10:06 pm- Forum: Critical Reasoning
- Topic: Robot satellites and space flights
- Replies: 1
- Views: 1288
1988 corporate profits
As measured by the Commerce Department, corporate profits peaked in the fourth quarter of 1988 and have slipped since then, as many companies have been unable to pass on higher costs . (A) and have slipped since then, as many companies have been unable to pass on higher costs (B) and have slipped si...
- by LulaBrazilia
Thu Mar 06, 2014 10:04 pm- Forum: Sentence Correction
- Topic: 1988 corporate profits
- Replies: 1
- Views: 1143
R&D expenditures
Because of the enormous research and development expenditures required to survive in the electronics industry, an industry marked by rapid innovation and volatile demand, such firms tend to be very large. (A) to survive (B) of firms to survive (C) for surviving (D) for survival (E) for firms’ surv...
- by LulaBrazilia
Thu Mar 06, 2014 10:02 pm- Forum: Sentence Correction
- Topic: R&D expenditures
- Replies: 4
- Views: 2086
- by LulaBrazilia
Thu Mar 06, 2014 9:05 am- Forum: Data Sufficiency
- Topic: what is the sum of angles x and y?
- Replies: 3
- Views: 3607
Survey results
http://snag.gy/Lo00a.jpg The table above shows the results of a survey of 100 voters who 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 resunded "Fav...
- by LulaBrazilia
Thu Mar 06, 2014 9:02 am- Forum: Data Sufficiency
- Topic: Survey results
- Replies: 2
- Views: 1522
How many green marbles in R?
In the table above, what is the number of green marbles in jar R?
A) 70
B) 80
C) 90
D) 100
E) 110
- by LulaBrazilia
Thu Mar 06, 2014 8:56 am- Forum: Problem Solving
- Topic: How many green marbles in R?
- Replies: 7
- Views: 5715
How to quickly find sum of integers?
If x is equal to the sum of the even integers from 40 to 60, inclusive, and y is the number of even integers from 40 to 60, inclusive, what is the value of x+y ?
A) 550
B) 551
C) 560
D) 561
E) 572
- by LulaBrazilia
Thu Mar 06, 2014 8:53 am- Forum: Problem Solving
- Topic: How to quickly find sum of integers?
- Replies: 5
- Views: 2306
Robots replacing workers
In many corporations, employees are being replaced by automated equipment in order to save money. However, many workers who lose their jobs to automation will need government assistance to survive, and the same corporations that are laying people off will eventually pay for that assistance through i...
- by LulaBrazilia
Wed Mar 05, 2014 9:27 pm- Forum: Critical Reasoning
- Topic: Robots replacing workers
- Replies: 3
- Views: 1964
Lower incidence of intestinal disease
The number of people diagnosed as having a certain intestinal disease has dropped significantly in a rural county this year, as compared to last year. Health officials attribute this decrease entirely to improved sanitary conditions at water-treatment plants, which made for cleaner water this year a...
- by LulaBrazilia
Wed Mar 05, 2014 9:24 pm- Forum: Critical Reasoning
- Topic: Lower incidence of intestinal disease
- Replies: 1
- Views: 1253