Search found 9 matches
I got B as my answer
Is x Pos? 1) X+6> 2 therefore, x>-4. Could be either pos or neg. Insuf. 2) x^2>25 so x^2-25>0 factor down: (x-5)(x+5)>0 so x-5>0 x>5 or x+5>0 x>-5 . Eithere way, the answer cannot lie in the middle. It means x is pos. That is my take. What do you guys think? I noticed that the signs switched in some...
- by mark412
Mon Aug 17, 2009 5:07 pm- Forum: Data Sufficiency
- Topic: Is x a positive number?
- Replies: 11
- Views: 3816
My choice is E
Guys, First, Yes I do feel the question is a bit ambiguous. But I will devise an interpretation based on what I think it means. Only here to provide additional insight and help. Let's begin. In this case my answer to the above question is E. (1) Tells us that N>3, it is made up of 2 prime #'s. well ...
- by mark412
Mon Aug 17, 2009 4:22 pm- Forum: Data Sufficiency
- Topic: Ambiguous question
- Replies: 10
- Views: 2598
E
Agree with CR. make sure that when you want to rule out A,B, and D you combine all the elements to arrive at either C or E.
You were close. 1 more step. yes, it seems like they both work (in actuality they do) but we need to arrive at 1 answer only.
E
- by mark412
Mon Aug 17, 2009 3:48 pm- Forum: Data Sufficiency
- Topic: Primes
- Replies: 3
- Views: 1440
Answer is E
Q. When the positive integer x is divided by 4, is the remainder equal to 3? (1) When x/3 is divided by 2, the remainder is 1. (2) x is divisible by 5. (1) I resimplified this to read x/6 (bc x/3/2 is really x/3 x 1/2). then from there I plugged in possible values for x. You will find some answers l...
- by mark412
Mon Aug 17, 2009 3:42 pm- Forum: Data Sufficiency
- Topic: Tough DS: Factors & Multiples
- Replies: 10
- Views: 4820
Answer is C
I took the linear equation approach of a Venn Diagram Set A + Set B- Both (A+B)+N=Total We do need both bits of info as you can see they are complementary and crucial to creating an equation. This is what C looks like if you had the info lined up Denote: Set A=X, Set B=Y, N=Neither X+Y-.72+.27=1 (re...
- by mark412
Mon Aug 17, 2009 3:16 pm- Forum: Data Sufficiency
- Topic: Percentage Problem?
- Replies: 5
- Views: 1644
Agree with E
I would go with E. The trick is we cannot multiply the divisor with a variable whose sign we do not know. If it is negative, that could change how the equality is represented. Since we do not know the sign for either x or y, we cannot assume they are positive.
Answer is E
- by mark412
Mon Aug 17, 2009 2:37 pm- Forum: Data Sufficiency
- Topic: if X>1 and Y>1, is X<Y?
- Replies: 9
- Views: 6870
Why I dont think it is C
Guys, If it is C, that means that the opposite sides are equal length and parallel to one another. These two properties hold for a rectangle as well. The choice should be E. The difference between the two is that rectangles have 90 degree angles while a parallelogram's interior angles add up to 360 ...
- by mark412
Mon Aug 17, 2009 2:24 pm- Forum: Data Sufficiency
- Topic: Parallelogram
- Replies: 14
- Views: 2062
Think of how the word "of" is used
I hope this will help: It is not asking for the total homes/all the homes in City X that were occupied but rather it focuses on the 230 that were built. 1)If the question was what was the total homes occupied in City X at the end of the year, you would be correct in answering A. 2) This jus tells yo...
- by mark412
Mon Aug 17, 2009 2:03 pm- Forum: Data Sufficiency
- Topic: Data Sufficiency help
- Replies: 2
- Views: 1645
In need of major help (completely frustrated)
My journey thru the GMAT thus far has been painful. I started last October with Manhattan GMAT. I recently worked with Veritas. Took the GMAT this past Saturday. got a 510. I need a 690. I have put more study hours and sacrificed so much. You can imagine my pain of falling so short. My Q29 and V32. ...
- by mark412
Mon Jul 27, 2009 6:01 pm- Forum: GMAT Strategy
- Topic: In need of major help (completely frustrated)
- Replies: 0
- Views: 1027