Search found 121 matches
I'm not 100% I understand the question correctly, but the way I read it: We have a number, t, that has factors: 2*a*c, a*b, and a*b*c. And we want to know what the smallest number of potential integers t could be divisible by. We also know a, b, and c are prime. To solve this problem, I am going to ...
- by CappyAA
Tue Jan 10, 2012 11:59 am- Forum: Problem Solving
- Topic: Prime numbers and divisibilty
- Replies: 10
- Views: 1965
You only flip the inequality if one side is positive and the other is negative. If both sides are positive, you do not flip the inequality. So in Case 1 where x > 0 4/x < 1/3 12 < x This makes sense because 4/12 can be simplified to 1/3. A larger value of x would give a smaller number and satisfy th...
- by CappyAA
Fri Dec 16, 2011 8:14 am- Forum: Problem Solving
- Topic: Inequality Problem
- Replies: 3
- Views: 1369
Good catch - I think that was probably a typo though. At least he arrived at the right answer! I got 1680 too.chieftang wrote:Correction: 3360.shankar.ashwin wrote:Total 8 letters with 2 A's and 3B's.
No of ways to arrange them = 8!/(2!*3!) = 3660
In exactly half the arrangements C will be to the right of D (or) 1680
- by CappyAA
Tue Dec 13, 2011 12:10 pm- Forum: Problem Solving
- Topic: Arrange Letters
- Replies: 3
- Views: 1194
I've been on these forums for a while, and I have never seen anyone say that extensive preparation is the only way to get a great score. You're probably a very smart individual and already strong in most of the GMAT-tested concepts. Your baseline score is probably already quite high. If this is the ...
- by CappyAA
Tue Dec 13, 2011 11:08 am- Forum: I just Beat The GMAT!
- Topic: 760 with very little studying
- Replies: 19
- Views: 10254
A big red flag for me is that the premises all discuss multiples (or percentage changes), and the answer choice in C is in numbers. This is a very common wrong answer type where the GMAT will mix up percentages and absolute numbers. It should set off bells in your head to give it a closer look.
- by CappyAA
Thu Dec 08, 2011 1:35 pm- Forum: Critical Reasoning
- Topic: Self Employment
- Replies: 11
- Views: 2550
1. D We know that a total blockade of Patria's ports is necessary to an embargo, but this would likely cause international discord. We also know that a high degree of international accord must be sustained for a trade embargo to succeed. Since we likely cannot hold one of the two conditions of succe...
- by CappyAA
Wed Nov 30, 2011 10:19 am- Forum: Critical Reasoning
- Topic: Toughs CRs - Please help
- Replies: 3
- Views: 1307
IMO D We know that all bureaucratic organizations are heirarchical. We know that the Public Works Department is a bureaucratically controlled organization (meaning it is hierarchical). And we also know that the PWD operates differently than most other bureaucratic organizations. This can only be tru...
- by CappyAA
Tue Nov 29, 2011 6:27 am- Forum: Critical Reasoning
- Topic: hierarchical organization
- Replies: 4
- Views: 1306
We know the profit goes up as the number of units goes up. However, it does not go up proportionally. We want to know if the profit exceeded $4 million from sales of 380,000 units. (1) Knowing the profit exceeded $2 million on the sales of 200,000 units tells us nothing because the profit does not i...
- by CappyAA
Mon Nov 28, 2011 1:44 pm- Forum: Data Sufficiency
- Topic: The profit from the sale ...
- Replies: 5
- Views: 2241
The question is not asking you to determine what are the possible sides. The question is asking you to determine if you can figure out which angle has the greatest degree of measure. In order to do this, you will need to figure out the length of the sides. We know that PQ = x, QR = x+2, and PR = y. ...
- by CappyAA
Mon Nov 28, 2011 1:31 pm- Forum: Data Sufficiency
- Topic: In PQR, if PQ = x, QR = x + 2, and PR = y, which of the ..
- Replies: 4
- Views: 4106
+1 for a factor tree. For me, it's usually much easier to start with the super easy prime factors. I keep dividing by 2 until I no longer have an even number. I then divide by 3 (you can check if the digits add up to a number divisible by 3). Then 5, etc. As was previously mentioned, the GMAT genera...
- by CappyAA
Mon Nov 28, 2011 11:18 am- Forum: Problem Solving
- Topic: How do you quickly find prime factors of a large number
- Replies: 8
- Views: 58279
Russell earns a flat rate of $75 per car sold PLUS 1% of the sticker price. So for his total commission, we can write the equation: Commission = $75*(No. of Cars Sold) + 0.01*(Avg. Price)*(No. of Cars Sold) = 75*8 + 0.01*8*7787.5 = 600 + 623 = $1223 D You are going to have to read the description ve...
- by CappyAA
Tue Nov 15, 2011 11:39 am- Forum: Problem Solving
- Topic: Russell sells used cars
- Replies: 5
- Views: 1255
The seeming contradiction is this - everyone hates receiving "junk mail," and everyone ought to be concerned about informational privacy, however people still buy things through these direct mailings. To strengthen this contradiction, we need to find an answer that gives a reason for why p...
- by CappyAA
Tue Nov 15, 2011 11:12 am- Forum: Reading Comprehension
- Topic: Intrusive Marketing -Strengthen Question(Expert Help Needed)
- Replies: 2
- Views: 1972
The MGMAT Book 4 (Word Translations Book) touches on Rate problems. There's a chapter early in the book on rates and another advanced chapter later on in the book. I haven't reviewed in a while, but I remember it to be very good.
- by CappyAA
Tue Nov 15, 2011 10:17 am- Forum: Problem Solving
- Topic: Average Rates help
- Replies: 1
- Views: 890
I didn't use that specific formula for this question. For any evenly spaced series, the sum of the series will be equal to the average multiplied by the number of terms. In this case, the average in a series of even numbers from 99 to 301 is 200 (our series starts with 100 and ends with 300). There ...
- by CappyAA
Mon Nov 14, 2011 7:54 am- Forum: Problem Solving
- Topic: sum of even integers
- Replies: 3
- Views: 1086
You can do this problem very quickly without doing any math. If you look closely at the problem, you'll see that the equation is simply a weighted average of 10 and 20. x/(x+y) + y/(x+y) will equal 1 --> x/(x+y) + y/(x+y) = (x+y)/(x+y) = 1 So we can simplify this equation by saying x/(x+y) = X and y...
- by CappyAA
Mon Nov 14, 2011 7:48 am- Forum: Problem Solving
- Topic: value of k
- Replies: 3
- Views: 1034