Search found 77 matches
Is this a combination problem?
In how many arrangements can a teacher seat 3 girls and 3 boys
in a row of 6 seats if no two children of the same gender are to
be adjacent?
(A) 6
(B) 12
(C) 36
(D) 72
(E) 144
OA is D.
- by pharmxanthan
Tue Jul 27, 2010 8:28 pm- Forum: Problem Solving
- Topic: Is this a combination problem?
- Replies: 7
- Views: 3624
Divisibility by 11
If m and z are integers, is z divisible by 11?
(1) m is a two-digit number with equal tens and units digits.
(2) m - z is divisible by 11.
[spoiler]OA is C
If m=11 and z=0, then z is not divisible by 11. Is OA wrong? [/spoiler]
- by pharmxanthan
Sun Jul 25, 2010 4:02 pm- Forum: Data Sufficiency
- Topic: Divisibility by 11
- Replies: 1
- Views: 1189
- by pharmxanthan
Thu Jul 15, 2010 10:53 am- Forum: Critical Reasoning
- Topic: Tough CR
- Replies: 7
- Views: 2638
Tough CR
Governmnet -subsidized insurance available to homeowners makes it feasible for anyone to build a house on a section of coastline regularly struck by hurricanes. Each major storm causes billions of dollars worth of damage in such coastal areas, after which owners who have insurance are able to collec...
- by pharmxanthan
Wed Jul 14, 2010 4:11 pm- Forum: Critical Reasoning
- Topic: Tough CR
- Replies: 7
- Views: 2638
I think that access to this set of questions requires a subscription to Manhattan GMAT's "Challenge Problem Archive" and so this attachment should not be posted in the public domain.
- by pharmxanthan
Tue Jul 13, 2010 8:30 pm- Forum: GMAT Strategy
- Topic: Manhattan GMAT Archive(Maths)
- Replies: 4
- Views: 2628
Finally, Wonder mentioned that "because he went" is better than "because of him going". It's important to note that the latter phrase is wrong. You would have to say "because of HIS going". That's a possessive pronoun modifying the NOUN "going..." (as in &quo...
- by pharmxanthan
Tue Jul 13, 2010 8:03 pm- Forum: Sentence Correction
- Topic: og 11
- Replies: 15
- Views: 8353
17. A patient accusing a doctor of malpractice will find it difficult to prove damage if there is a lack of some other doctor to testify about proper medical procedures. (A) if there is a lack of some other doctor to testify (B) unless there will be another doctor to testify (C) without another doc...
- by pharmxanthan
Thu Jul 08, 2010 4:20 pm- Forum: Sentence Correction
- Topic: 1000 Sc : sentence formation?
- Replies: 23
- Views: 15545
In a class of 120 students numbered 1 to 120, all even numbered students opt for Physics, whose numbers are divisible by 5 opt for Chemistry and those whose numbers are divisible by 7 opt for Math. How many opt for none of the three subjects? basically you need to find number between 1 to 120 which...
- by pharmxanthan
Mon Jun 21, 2010 8:18 am- Forum: Problem Solving
- Topic: Sets, students
- Replies: 8
- Views: 4669
Probability question_Answer evaluation
Q) A bag contains 3 red balls, 5 yellow balls, and 4 green balls. Two balls are drawn randomly. What is the probability that the balls drawn contain balls of different colors? A) Number of ways to select 2 balls out of 12 balls = 12C2 = 66. Number of ways to select two balls of different colors (red...
- by pharmxanthan
Fri Jun 11, 2010 1:03 pm- Forum: Problem Solving
- Topic: Probability question_Answer evaluation
- Replies: 2
- Views: 979
If the name is exactly the same, then Patrick is the legal "owner" of the trademark. If Patrick has not filed for the trademark, he probably should do so to avoid such conflicts in future. Even if MG files for the trademark before Patrick, law will side with Patrick as his "product&qu...
- by pharmxanthan
Fri May 28, 2010 6:27 pm- Forum: GMAT Math
- Topic: Official Guide Companion: ManhattanGMAT vs GMATFix
- Replies: 3
- Views: 5440
- by pharmxanthan
Fri May 28, 2010 6:17 pm- Forum: Problem Solving
- Topic: Circles & Cylinders
- Replies: 8
- Views: 2751
Congrats tomaszbatyra! How were the CR questions in the GMAT? Were they similar, in terms of length and complexity, to those given in official guides?
- by pharmxanthan
Tue May 25, 2010 12:22 pm- Forum: I just Beat The GMAT!
- Topic: Just 690 (Q48, V36), one month preparation tips
- Replies: 5
- Views: 2461
Thanks Stuart. I have seen some equations using "Neither". The post to which you referred does not use this term. Also, why do we need to "minimize the number of people who love exactly 1 of the 3"? If we have, for example, a larger A, we will have a smaller ABC.
- by pharmxanthan
Mon May 17, 2010 3:48 pm- Forum: Problem Solving
- Topic: Why does the following Set Theory Formula not Work for this
- Replies: 8
- Views: 3578
Hey pierce#, I think that it is better to draw the Venn Diagram and start from inside out. (MGMAT Guide 4) It will take a bit longer than it would take to plug in the formula but you will be sure of the answer. If an expert can list most or all of the formulae and lists scenarios when when they coul...
- by pharmxanthan
Mon May 17, 2010 2:18 pm- Forum: Problem Solving
- Topic: Why does the following Set Theory Formula not Work for this
- Replies: 8
- Views: 3578
Here are two examlpes: 1. Opened in 1869, the Transcontinental Railroad had immediate and far-reaching effects on America, including a population explosion in the West, the decline of Native Americans, joining of East Coast culture and Western convention , and cultivation of thousands of acres of n...
- by pharmxanthan
Mon May 17, 2010 11:15 am- Forum: Sentence Correction
- Topic: Confusion with parallelism
- Replies: 3
- Views: 1956