Search found 12 matches
Prime number question
If p is a prime number greater than 2, what is the value of p? (1) There are a total of 100 prime numbers between 1 and p+1 (2) there are a total of p prime numbers between 1 and 3912 I have no idea how to start with this problem. Plus, can you show the fastest way to handle this problem in 2 minute...
- by dtl
Mon Jan 21, 2013 2:20 am- Forum: Data Sufficiency
- Topic: Prime number question
- Replies: 2
- Views: 922
Word problem - Distance question
During a 40-mile trip, Marla travelled at an average speed of x miles per hour for the first y miles of the trip, and an average of 1.25x miles for the last 40-y miles of the trip. The time Marla took to travel 40 miles was what percent of the time it would have taken her if she had trabveled at an ...
- by dtl
Mon Jan 21, 2013 2:19 am- Forum: Data Sufficiency
- Topic: Word problem - Distance question
- Replies: 2
- Views: 901
The number of 75 can be written as the sum
The number of 75 can be written as the sum of the squares of 3 different positive integer. What's the sum of these 3 integer?
A. 17
B. 16
C. 15
D. 14
E. 13
Is there any quick method to approach this question instead of testing cases? Please help.. Thank you!
- by dtl
Mon Jan 21, 2013 2:15 am- Forum: Problem Solving
- Topic: The number of 75 can be written as the sum
- Replies: 2
- Views: 1206
Number properties problem
For every integer k from 1 to 10, inclusive, the kth term of a certain sequence is given by (-1)^(k+1)*(1/2^k), If T is the sum of the first 10 terms in the sequence, then T is? A. Greater than 2 B. Between 1 and 2 C. Between 1/2 and 1 D. Between 1/4 and 1/2 E. Less than 1/4 This is a question from ...
- by dtl
Mon Jan 21, 2013 2:12 am- Forum: Problem Solving
- Topic: Number properties problem
- Replies: 6
- Views: 1518
Alice's take-home pay last year was the same each month
Alice's take home pay last year was the same each month, and she saved the same fraction of her take-home pay each month. The total amount of money she saved at the end of the year was 3 times the amount of that portion of her monthly take-home pay that she did not pay. If all the money that she sav...
- by dtl
Mon Jan 21, 2013 2:08 am- Forum: Problem Solving
- Topic: Alice's take-home pay last year was the same each month
- Replies: 5
- Views: 2355
Sorry about that. Maybe these are the better ones, so you can see them. This picture is when I checked the date and time for the test. https://www.dropbox.com/s/44az3jhe07qvadm/untitled.bmp And then, after I clicked "Next", and waited for couple of seconds I guess, this is what it was show...
- by dtl
Wed Dec 12, 2012 9:44 am- Forum: Lounge
- Topic: GMAT Test appointment making question
- Replies: 3
- Views: 1913
A question from GMAT Prep
A question from GMAT Prep Of the students who eat in a certain cafeteria, each student either likes or dislikes lima beans, and each student either likes or dislikes brussel sprouts. Of these students, 2/3 dislike lima beans; and of those who dislike lima beans, 3/5 also dislike brussel sprouts. How...
- by dtl
Wed Dec 12, 2012 2:22 am- Forum: Data Sufficiency
- Topic: A question from GMAT Prep
- Replies: 1
- Views: 1147
GMAT Test appointment making question
Hi, I plan to take GMAT in January 2013. I went in mba.com website, tried to figure out how to make a placement for my test day. I thought it should be easy to register for the test, and it seemed so, as the system was well-buit. However, after I chose the date and time for test appointment, as I cl...
- by dtl
Wed Dec 12, 2012 1:06 am- Forum: Lounge
- Topic: GMAT Test appointment making question
- Replies: 3
- Views: 1913
Thanks a lot for your explanation!! I forgot that substitution is the golden rule for solving equations. Now I get it 
- by dtl
Sun Dec 09, 2012 6:22 pm- Forum: Data Sufficiency
- Topic: Are x and y both positive?
- Replies: 2
- Views: 1153
Are x and y both positive?
Are x and y both positive?
(1) 2x - 2y = 1
(2) x/y > 1
(GMAT Prep Practice Test)
- by dtl
Sun Dec 09, 2012 6:12 pm- Forum: Data Sufficiency
- Topic: Are x and y both positive?
- Replies: 2
- Views: 1153
How many of tables are in the warehouse?
To furnish a room in a model home, an interior decorator is to select 2 chairs and 12 tables from a collection of chairs and tables in a warehouse that are all different from each other. If there are 5 chairs in the warehouse and if 150 different combinations are possible. How many of tables are in ...
- by dtl
Sun Dec 09, 2012 6:08 pm- Forum: Problem Solving
- Topic: How many of tables are in the warehouse?
- Replies: 1
- Views: 944
Number properties problem - GMAT Prep Practice test
Each term in the sum a1+a2+...+an is either 7 or 77, and the sum equals 350. Which of the following could be equal to n? A. 38 B. 39 C. 40 D. 41 E. 42 Quantitative question from GMAT Prep Practice Test. Can somepne please explains how you approach the answer with this question? This kind of number p...
- by dtl
Wed Dec 05, 2012 11:40 pm- Forum: GMAT Math
- Topic: Number properties problem - GMAT Prep Practice test
- Replies: 3
- Views: 1525