Search found 22 matches
The central angle of the arc would be formed by drawing radii from the endpoints of the arc (X and Z) to the center of the circle (let's call it O). The arc will be proportional to the circumference of the circle as the central angle is proportional to 360. To put that another way: (arc/circumferenc...
- by Princeton Review
Sat Apr 07, 2007 5:54 am- Forum: Data Sufficiency
- Topic: ds test5 #21
- Replies: 4
- Views: 3424
The easiest thing to do here is pick a number for x. Let's say x=12 Since each picket is 1/2" wide, there are 6" of pickets, or 1/2' (remember that the answer is in feet). But the fence has 6" in between each picket. There are 11 spaces in between the pickets. So there is a total of 5...
- by Princeton Review
Sat Apr 07, 2007 5:47 am- Forum: Problem Solving
- Topic: Kaplan CD Companion Question
- Replies: 2
- Views: 2807
This is a confusing one which may be best handled by plugging in numbers. Let's say that John and Mary were each given $900 for the job, for a total payment of $1,800. They worked a total of 18 hours on the job, but Mary only worked 8 of those hours. So to be fair, she gave John some money. $1800 fo...
- by Princeton Review
Sat Apr 07, 2007 5:37 am- Forum: Problem Solving
- Topic: Official Guide - Word Problem
- Replies: 4
- Views: 1996
When you're thinking about probability, the common sense way to consider it is "what I want" / "total possible". For this problem, the ultimate outcome that you want is to pick a sibling pair from among the juniors and seniors. So what has to happen for that outcome to occur? Fir...
- by Princeton Review
Sat Apr 07, 2007 5:31 am- Forum: Problem Solving
- Topic: GMAT Official Guide - Probability googly
- Replies: 4
- Views: 1974
Hi Prasanna: DS can be particularly tricky--not hard necessarily, but very tricky. The OG will never tell you to substitute numbers; they want you to do it the long, mathy way, not the simplest way which is most likely to beat the test. In general, I would recommend the Princeton Review's Cracking t...
- by Princeton Review
Wed Apr 04, 2007 12:55 am- Forum: Data Sufficiency
- Topic: OG DS help
- Replies: 3
- Views: 3325
To add on--the assumption of G's argument is that there is no way to get the drugs without testing on sentient animals. Answer E gives us a way to still have the drugs (which is what G wants) while not testing on animals. Looking for the assumption of the argument is often key to getting this type o...
- by Princeton Review
Wed Apr 04, 2007 12:38 am- Forum: Critical Reasoning
- Topic: 1000 CR test11
- Replies: 2
- Views: 3944
Thanks, Eric. I'm really looking forward to chatting with everyone and answering any questions you may have about the GMAT.
Best,
Matt
- by Princeton Review
Mon Apr 02, 2007 3:44 am- Forum: Announcements
- Topic: Princeton Review joins Beat The GMAT!
- Replies: 3
- Views: 5892