Search found 8 matches
- by abbyyip
Thu Jul 26, 2007 3:27 pm- Forum: Problem Solving
- Topic: Prime Factor Question (GMAT Prep Exam)
- Replies: 2
- Views: 1891
Prime Factor Question (GMAT Prep Exam)
Is there a simple method of solving this?
What is the greatest prime factor of 4^17 - 2^28?
2
3
5
7
11
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The answer is 7
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- by abbyyip
Tue Jul 24, 2007 8:07 pm- Forum: Problem Solving
- Topic: Prime Factor Question (GMAT Prep Exam)
- Replies: 2
- Views: 1891
Practice Test Fluctutation
My practice test scores are fluctuating like crazy! does anyone have any experience with this? Could it be my mood? (i.e. one hard question in the middle of the test screwing me over) or can my skill level really fluctuate this much? and for those who took the actual gmat already, which practice tes...
- by abbyyip
Thu Jul 12, 2007 6:23 pm- Forum: GMAT Strategy
- Topic: Practice Test Fluctutation
- Replies: 2
- Views: 2454
- by abbyyip
Thu Jun 21, 2007 1:29 pm- Forum: Problem Solving
- Topic: Princeton Review Exam Question (Probability)
- Replies: 5
- Views: 2062
Princeton Review Exam Question (Probability)
Does anyone know a simple or clear way to solve this Probability Problem?
Two couples and one single person are seated at random in a row of 5 chairs. What is the probability that niether of the couples sits together in adjacent chairs?
a) 1/5
b) 1/4
c) 3/8
d) 2/5
e) 1/2
Thanks!
- by abbyyip
Tue Jun 19, 2007 7:14 pm- Forum: Problem Solving
- Topic: Princeton Review Exam Question (Probability)
- Replies: 5
- Views: 2062
Question on Notes Example
(This problem was an example in the notes:) I was wondering if "Life-Styles" is plural, and if it is, shouldn't the correct answer have "seem" instead of "seems" In a crowded, acquisitive world, the disapperance of lifestyles such as those once followed by southern Afri...
- by abbyyip
Wed May 30, 2007 10:24 pm- Forum: Sentence Correction
- Topic: Question from Sahil's Notes
- Replies: 1
- Views: 1689
Is there any way you can post this explaination?MGMAT has given an explanation that involves 14 steps of calculations
- by abbyyip
Mon May 14, 2007 7:00 pm- Forum: Problem Solving
- Topic: MGMAT - triangles
- Replies: 6
- Views: 2094
Combination problem - please help!
Can someone please explain the concept of indistinguishable items within a combination problem, such as the one below: Ben needs to form committee of 3 from a group of 8 engineers. If 2 of the engineers are too inexperienced to serve in the same committee, how many different committees can Ben form?...
- by abbyyip
Sat May 12, 2007 7:20 pm- Forum: Problem Solving
- Topic: Combination problem - please help!
- Replies: 1
- Views: 1410