Search found 118 matches
PS - must be true Q
If xy+z=x(y+z), which of the following must be true?
A. x=0 and z=o
B. x=1 and y=1
C. y=1 and z=0
D. x=1 and y=0
E. x=1 and z=0
OA E
- by ccassel
Wed Nov 16, 2011 10:36 am- Forum: GMAT Math
- Topic: PS - must be true Q
- Replies: 2
- Views: 2232
PS - Permutations Q
Hi, How would the solution to this question differ if it were "row" vs. "circular"? 4 people are to be seated around a circular table at a banquet. If there are exactly 4 places around the table where the people are to be seated, in how many different orders may they be arranged?...
- by ccassel
Fri Jul 29, 2011 8:23 am- Forum: Problem Solving
- Topic: PS - Permutations Q
- Replies: 1
- Views: 982
idiom - not only .... but also
MUST the idiom "not only" always be followed by "but also" or is it still gramaticaly correct to have "not only" without "but also" preceeding it?
An experts reply would be very much appreciated!
Thanks,
- by ccassel
Mon Jun 20, 2011 10:53 am- Forum: Sentence Correction
- Topic: idiom - not only .... but also
- Replies: 4
- Views: 2714
Hi, From(2):As xy<0, |xy| = -xy case-1 : |x| - |y| < 0 As |x - y| > 0, |x - y| > |x| - |y| always holds case-2 : |x| - |y| > 0 |x - y|^2 = x^2 + y^2 - 2xy = x^2 + y^2 + 2|xy| (|x| - |y|)^2 = x^2 + y^2 - 2|xy| So, |x - y|^2 > (|x| - |y|)^2 So, |x - y| > |x| - |y| Sufficient B Frankenstein, Why would...
- by ccassel
Mon Jun 20, 2011 7:05 am- Forum: Data Sufficiency
- Topic: DS - absolute value
- Replies: 4
- Views: 1141
ds - total amount?
What does "the total amount" represent and why can you assume either? Dollars? or Percentage? Henry purchased 3 items during a sale. He received a 20% discount off the regular price of the most expensive item and a 10% discount off the regular price of each of the other 2 items. Was the to...
- by ccassel
Thu Jun 16, 2011 12:11 pm- Forum: Data Sufficiency
- Topic: ds - total amount?
- Replies: 7
- Views: 1860
DS - absolute value
How would you efficiently work through this question?
Is |x - y| > |x| - |y|?
I. y < x
II. xy < 0
Answer is B
- by ccassel
Wed Jun 15, 2011 5:52 am- Forum: Data Sufficiency
- Topic: DS - absolute value
- Replies: 4
- Views: 1141
- by ccassel
Tue Jun 14, 2011 2:03 pm- Forum: GMAT Strategy
- Topic: score vs. percentile vs. correct/incorrect
- Replies: 2
- Views: 1035
score vs. percentile vs. correct/incorrect
Hi all, I am sure a lot of you have reached this juncture in your studying so I will ask for your advice! What study strategy would you take if you are scoring high 40's in the Quant but only getting 60% of the questions correct on the GMAT Preptest Software? Should I be focusing on content, timing,...
- by ccassel
Tue Jun 14, 2011 1:12 pm- Forum: GMAT Strategy
- Topic: score vs. percentile vs. correct/incorrect
- Replies: 2
- Views: 1035
That is what I thought. Some previous posts were confusing the PT for 1:1:root3, illogically comming to the, coincidentally, correct conclusion. However, as stated the correct PT ratio is 1:root3:2 based on the given information.
Thanks.
- by ccassel
Tue Jun 07, 2011 9:16 am- Forum: Problem Solving
- Topic: ps - triangle in a circle from GMAT Prep Test
- Replies: 7
- Views: 2826
ps - triangle in a circle from GMAT Prep Test
http://www.beatthegmat.com/area-of-triangular-region-t44447.html#187497 This question has been discussed but there are differing opinions on what angle in the triangle is 90 degrees and therefore, what the hypot represents. Can anyone clarify? The link is above. Thanks, Q. In the figure above, the r...
- by ccassel
Tue Jun 07, 2011 9:02 am- Forum: Problem Solving
- Topic: ps - triangle in a circle from GMAT Prep Test
- Replies: 7
- Views: 2826
- by ccassel
Tue May 24, 2011 11:04 am- Forum: Sentence Correction
- Topic: compare to vs. compare with
- Replies: 1
- Views: 1305
Due to fatigue, I jumped to the conclusion that wx^2= 16 = y^2 when in fact it is not equal.
Thanks for pointing out my mistake manpsingh87.
Cheers,
- by ccassel
Wed Apr 27, 2011 11:12 am- Forum: Data Sufficiency
- Topic: DS - value - gmat prep
- Replies: 4
- Views: 1372
DS - value - gmat prep
I am overlooking something obvious here; can anyone explain the answer?
If wx = y, what is the value of xy?
1. wx^2 = 16
2. y = 4
Answer is A
Cheers,
- by ccassel
Wed Apr 27, 2011 10:33 am- Forum: Data Sufficiency
- Topic: DS - value - gmat prep
- Replies: 4
- Views: 1372
DS - males/females college
What fraction of this year graduation students at a certain college are males ? 1. Of this year graduating students, 33% of the males and 20% of the females transferred from another college. 2. Of this year's graduating students, 25% transferred from another college. The answer is C but what do we k...
- by ccassel
Tue Apr 26, 2011 3:07 pm- Forum: Problem Solving
- Topic: DS - males/females college
- Replies: 2
- Views: 1029
I would use plug-in method to solve this question. (1) x=21 y=12 (21-12)/9=9/9=1 integer x=31 y=13 (31-13)/9=18/2=2 integer Therefore, notice the pattern for any possible variables x & y and declare sufficient. (2) x = 31,42,53,64,75,86,97 y = 13,24,35,46,57,68,79 (31-24)/9=7/9 not an integer (3...
- by ccassel
Mon Apr 25, 2011 9:47 am- Forum: Data Sufficiency
- Topic: units and tens digits
- Replies: 5
- Views: 3397