Search found 164 matches
Hi :) I like the way the problem was explained by the expert. Moreover, it is worth to remember about the roles of antecedent and consequent of a conditional. The antecedent of a conditional is a sufficient condition for the consequent. The consequent of a conditional is a necessary condition for th...
- by Maciek
Fri Aug 19, 2011 6:15 am- Forum: Problem Solving
- Topic: Im still confused abt this question
- Replies: 4
- Views: 1515
Hi all! I choose original answer. It is D. It is parallel: "San Antonio, Texas, has...than any city does" Answer C is also parallel, but has completely different meaning. Answers A, B and E are not parallel. Hope it helps! If you don't agree with my reasoning, please post here. Thanks! Bes...
- by Maciek
Fri Sep 24, 2010 3:04 am- Forum: Sentence Correction
- Topic: one more.
- Replies: 17
- Views: 3314
Hi! IMO B The main issues here are parallelism, wordiness and use of 'which'/'that' 1. Parallelism (A) 'which are harmless' - this is additional information, let us skip it, and check for parallelism. "...that... and which..." this structure is not parallel (C) "...that... and which.....
- by Maciek
Thu Sep 23, 2010 1:04 am- Forum: Sentence Correction
- Topic: knewton sc vr 2
- Replies: 7
- Views: 1702
Hi all!
The task here is to avoid unnecessary calculations.
We don't need information about radius of the well.
We simply need to use formula for speed, which is v = s/t.
s = ?
v = 54 kmph
t = 5min = 5/60 h
s = v*t = 54*5/60 = 4.5 km
Therefore, correct answer is 3.
Hope it helps!
Best,
Maciek
- by Maciek
Wed Sep 22, 2010 6:28 am- Forum: Problem Solving
- Topic: a question from gmat.............
- Replies: 3
- Views: 1413
Hi all! IMO E x > 0.65(y + z) (1) x > 1.2y We don't know anything about z. Statement (1) ALONE is INSUFFICIENT We should eliminate answer choices A & D. (2) z/y = 45/52 x > 0.65(y + 45/52y) x > 0.65* 97/52y x > 65*97/5200y x > 6305/5200y Statement (2) ALONE is INSUFFICIENT We should eliminate an...
- by Maciek
Wed Sep 22, 2010 2:29 am- Forum: Data Sufficiency
- Topic: Interesting GMATFix Problem-19
- Replies: 3
- Views: 1161
Hi Aman! IMO C If the terrorist hears the two shots at shorter interval than a S.W.A.T. Team does, the S.W.A.T. Team is faster. It is because the distance between the S.W.A.T. Team and terrorist became shorter. By how much the S.W.A.T. Team is faster? x = (1 - 330/335)*1188 = (1 - 66/67)*1188 = 1188...
- by Maciek
Wed Sep 22, 2010 2:04 am- Forum: Problem Solving
- Topic: S.W.A.T
- Replies: 5
- Views: 1630
Hi Aman, There are two trains A and B. The length of the route is 390 km. The ratio of speed of the two trains is 6 : 7. Therefore, the trains A and B should exchange their speeds after travelling 6/(6+7)*390 km and 7/(6+7)*390 km , respectively. The answer should be either 180 km or 210 km. Correct...
- by Maciek
Wed Sep 22, 2010 1:49 am- Forum: Problem Solving
- Topic: Destination
- Replies: 2
- Views: 1093
Venmic, There are following issues here: subject-verb agreement , idiom and parallelism . 1) subject-verb agreement [/color] "computer" is a singual noun, so the verb must be also singular. We should eliminate answer choice A. 2) correct idiom is "as many as" We should eliminate ...
- by Maciek
Wed Sep 22, 2010 12:49 am- Forum: Sentence Correction
- Topic: WAS/WERE
- Replies: 3
- Views: 1624
Hi all!
check it here:
http://www.beatthegmat.com/olympic-games-t12944.html
Hope it helps!
Best,
Maciek
- by Maciek
Wed Sep 22, 2010 12:25 am- Forum: Sentence Correction
- Topic: Again confused with the use of present participle modifier!!
- Replies: 6
- Views: 2307
IMO D There are following issues here: parallelism, logic of the sentence and idioms 1) parallelism The word “and� connects two sentences, which must be parallel. A: "To Henry David Thoreau..., and he" is not parallel B: "For Henry David Thoreau..., and he" is not parallel E:...
- by Maciek
Wed Sep 22, 2010 12:09 am- Forum: Sentence Correction
- Topic: To Henry David Thoreau, harmony with nature
- Replies: 7
- Views: 2948
Hi!
IMO E
x^2*y > 0 ?
x^2*y > 0 if y > 0 and (x < 0 or x > 0 )
(1) y^2 > 0
Therefore, y < 0 or y > 0
Statement (1) ALONE is INSUFFICIENT
(2) x = 2
Statement (2) ALONE is INSUFFICIENT
Statements (1) & (2) BOTH are together INSUFFICIENT.
Hope it helps!
Best,
Maciek
- by Maciek
Fri Sep 17, 2010 3:25 pm- Forum: Data Sufficiency
- Topic: positive/negative
- Replies: 7
- Views: 1447
Hi all! IMO E There are two main issues here: idiom and conditional. 1) correct idiom is "between X and Y" , where X and Y must be parallel. Therefore, "between competitions and race" is correct. We should eliminate answer choices A and B. 2) It should be correct type 0 condition...
- by Maciek
Fri Sep 17, 2010 3:07 pm- Forum: Sentence Correction
- Topic: knewton sc-4 hw 4
- Replies: 2
- Views: 1454
Hi! IMO C (1) p^3(1 - p^2) < 0 p^3(1 - p)(1 + p) < 0 /p^2 We can divide both sides by p^2 because p is not equal to 0 p(1 - p)(1 + p) < 0 -1 < p < 0 or p > 1 Statement (1) ALONE is NOT SUFFICIENT (2) p^2 - 1 < 0 (p - 1)(p + 1) < 0 -1 < p < 1 Statement (2) ALONE is NOT SUFFICIENT (1) & (2) (-1 < ...
- by Maciek
Thu Sep 16, 2010 3:19 pm- Forum: Data Sufficiency
- Topic: Is P negative???
- Replies: 3
- Views: 949
Hi all! IMO C Main issues here are 'if' versus 'whether' and verb tenses. 'Whether' should be used here. It is used to introduce a clause after a verb expressing or implying doubt or choice in order to indicate two or more alternatives. [1] Hence, we should eliminate answer choices A and B. Answers ...
- by Maciek
Thu Sep 16, 2010 2:10 pm- Forum: Sentence Correction
- Topic: Da Vinci first sketched the Mona Lisa
- Replies: 9
- Views: 1591
Nasir!
Your reasoning is correct.
8C5= the number of ways to select 5 union workers
The key word is 'at least'. Therefore, we need to add up combinations.
Either 4 union members work a shift or 5 union members work a shift.
Hence, we should add 8C5.
Hope it helps!
Best,
Maciek
- by Maciek
Thu Sep 16, 2010 10:40 am- Forum: Problem Solving
- Topic: Kaplan Combination Question
- Replies: 3
- Views: 1233