Search found 10 matches
Ahh..forgot to plug-in negative values. Silly me, I should never assume they are speaking about positive integers. Thanks for the breakdown Stuart.
- by wied81
Fri May 04, 2012 12:05 pm- Forum: Problem Solving
- Topic: OG 13 #229 How many of the integers...
- Replies: 8
- Views: 10087
OG 13 #229 How many of the integers...
229. How many of the integers that satisfy the inequality (x+2)(x+3) / x-2 >= 0 are less than 5? A) 1 B) 2 C) 3 D) 4 E) 5 OA: D The OG does some funky number line diagrams in explaining this problem and I was wondering if there's another way. Just off the top of my head, to me, it seems like only so...
- by wied81
Thu May 03, 2012 12:47 pm- Forum: Problem Solving
- Topic: OG 13 #229 How many of the integers...
- Replies: 8
- Views: 10087
Thank you Mitch and Mike, both of you had different reasoning but both helped me understand the problem. Mike, your approach was similar to the OG's answer approach and Mitch, as I've noticed you do from time to time, you eliminated the answers that didn't work when you plugged them in and worked ba...
- by wied81
Wed May 02, 2012 7:12 am- Forum: Problem Solving
- Topic: OG 13 #183 Seven pieces of rope...
- Replies: 20
- Views: 9354
30 day strategy - Emphasis on Quant
Hi all, I took the GMAT last week and scored a disappointing 510. I scored well in Verbal but only 18th percentile in Quantitative. I am taking the GMAT again on May 31st and really want to boost my math scores as they are my most glaring weakness. I have been going through OG #13 religiously workin...
- by wied81
Wed May 02, 2012 6:45 am- Forum: GMAT Strategy
- Topic: 30 day strategy - Emphasis on Quant
- Replies: 2
- Views: 1160
- by wied81
Wed May 02, 2012 6:23 am- Forum: Problem Solving
- Topic: OG 13 #178 - Virtual Reality
- Replies: 22
- Views: 15101
OG 13 #183 Seven pieces of rope...
183. Seven pieces of rope have an average (arithmetic mean) length of 68 centimeters and a median length of 84 centimeters . If the length of the longest piece of rope is 14 centimeters more than 4 times the length of the shortest piece of rope, what is the maximum possible length, in centimeters, o...
- by wied81
Tue May 01, 2012 1:36 pm- Forum: Problem Solving
- Topic: OG 13 #183 Seven pieces of rope...
- Replies: 20
- Views: 9354
OG 13 #178 - Virtual Reality
178. Of the 300 subjects who participated in an experiment using virtual-reality therapy to reduce their fear of heights, 40 percent experienced sweaty palms, 30 percent experienced vomiting, and 75 percent experienced dizziness. If all of the subjects experienced at least one of these effects and 3...
- by wied81
Tue May 01, 2012 12:51 pm- Forum: Problem Solving
- Topic: OG 13 #178 - Virtual Reality
- Replies: 22
- Views: 15101
Algebra - Applied Problems: In order to complete...
From OG #119 - Problem solving: 119) In order to complete a reading assignment on time, Terry planned to read 90 pages per day. However, she read only 75 pages per day at first, leaving 690 pages to be read during the last 6 days before the assignment was to be completed. How many days in all did Te...
- by wied81
Sat Apr 28, 2012 5:52 pm- Forum: Problem Solving
- Topic: Algebra - Applied Problems: In order to complete...
- Replies: 4
- Views: 3013
Arithmetic - Properties of Numbers: If n = ...
This is from OG 13 #117 in Problem Solving:
If N = 3^8 - 2^8, which of the following is NOT a factor of n?
A) 97
B) 65
C) 35
D) 13
E) 5
OA: C
The book posts a pretty obscure way to solve, would like to hear others opinions on this question.
- by wied81
Sat Apr 28, 2012 5:37 pm- Forum: Problem Solving
- Topic: Arithmetic - Properties of Numbers: If n = ...
- Replies: 7
- Views: 5223
Arithmetic - Statistics: If Q is an odd number...
If Q is an odd number and the median of Q consecutive integers is 120, what is the largest of these integers?
A) (Q-1)/2 + 120
B) Q/2 + 119
C) Q/2 + 120
D) (Q+119)/2
E) (Q+ 120)/2
OA: A
Just curios as to how you guys would solve this one. Thanks for any input.
- by wied81
Sat Apr 28, 2012 1:43 pm- Forum: Problem Solving
- Topic: Arithmetic - Statistics: If Q is an odd number...
- Replies: 1
- Views: 4627