Search found 107 matches
For any right-angled triangle, - if 3 internal angles are 30-60-90, the ratio of triangle's 3 sides is 1:sqrt3:2; and vice versa - if 3 internal angles are 45-45-90, the ratio of triangle's 3 sides is 1:1:sqrt2; and vice versa In the original question, if you draw a vertical like from P to axis X, a...
- by pakaskwa
Fri Apr 10, 2009 5:07 pm- Forum: Problem Solving
- Topic: GMAT Prep XY Coordinate with Half Circle
- Replies: 10
- Views: 2807
Book distribution
4 books to be distributed to 3 students, each student will have at least 1 book. How many possible ways to distribute the books?
A. 12
B. 72
C. 36
D. 24
E. 20
OA is C. Please let me know how you get it.
- by pakaskwa
Fri Apr 10, 2009 4:38 pm- Forum: Problem Solving
- Topic: Book distribution
- Replies: 5
- Views: 1259
Hello pab, Why i refuted A was bcos the survey concluded tht there is no change in the tv watching habits of the people who have increased their computer usage. Thus even if people were watching TV regularly before the survey happened, the survey concluded tht their habit has remained the same. this...
- by pakaskwa
Wed Apr 08, 2009 12:05 pm- Forum: Critical Reasoning
- Topic: TV vs computer
- Replies: 7
- Views: 4771
Hello Ron, I might miss something here. But here's my thoughts: 1. The argument is built on a causal relationship, ie, because "workforce with college degrees will increase", "average salary will increase too". 2. Assumption must be built upon some fact that there's no other reas...
- by pakaskwa
Wed Apr 08, 2009 11:51 am- Forum: Critical Reasoning
- Topic: average salary in Kravonia
- Replies: 9
- Views: 10430
Let x and y be the cost for skis and boots.
x(1+0.2)=96 --> x=80
y((1-0.1)=160 --> y=177.78
Total cost = 80+177.78=257.78
Total sales = 160+96=256
Profit/Loss = Sales-Cost = 256-257.78 = -1.78
Losss of -$1.78. Answer is A.
- by pakaskwa
Tue Apr 07, 2009 4:05 pm- Forum: Problem Solving
- Topic: Rick sold his skis
- Replies: 5
- Views: 3436
It's a question testing knowledge on arithmetic progression. And it's quite tricky because it's also testing knowledge on sets. For any arithmetic progression, a1, a2, ..., an, if we know common difference d, first number a1, and last number an, we can calculate how many numbers there are in the seq...
- by pakaskwa
Tue Apr 07, 2009 3:35 pm- Forum: Problem Solving
- Topic: integers between
- Replies: 3
- Views: 7778
- by pakaskwa
Tue Apr 07, 2009 12:56 pm- Forum: Problem Solving
- Topic: Number Properties - multiples of 5 (gmat prep)
- Replies: 8
- Views: 4516
Step 1: calculate all possible ways to arrange 7 letters including 2 same letters. All possible ways to arrange 7 DIFFERENT letters is: 7!=5040 But, remember there are 2 same letters I. So 7! contains duplicate arrangements. For example, GMATTII is the same as GMATTII (where two Is were switched pos...
- by pakaskwa
Tue Apr 07, 2009 12:39 pm- Forum: Problem Solving
- Topic: arragements
- Replies: 3
- Views: 1255
From the question, we will know that:
x=4
y=4n (n is positive integer, because y/4=n)
Therefore, x^y=4^(4n)=256^n
It's easy to see that unit digit of 256^n is 6.
- by pakaskwa
Tue Apr 07, 2009 12:23 pm- Forum: Problem Solving
- Topic: x^y
- Replies: 9
- Views: 2430
The OA is E. And I don't think it's the right answer. (Source is not reliable btw). I think the fundamental assumption of the survey is to survey people who at least watch tv. If they don't, then the whole survey is meaningless. Choice A is such an assumption. Choice E is one step away from that ass...
- by pakaskwa
Tue Apr 07, 2009 12:01 pm- Forum: Critical Reasoning
- Topic: TV vs computer
- Replies: 7
- Views: 4771
The OA is E. It's clearly a wrong answer. The source of this question is from some online GMAT test prep. It's not very reliable. I think D is the only reasonable answer.
- by pakaskwa
Tue Apr 07, 2009 11:50 am- Forum: Critical Reasoning
- Topic: Linguistic capabilities and the brain
- Replies: 14
- Views: 9253
TV vs computer
The growing popularity of computer-based activities was widely expected to result in a decline in television viewing, since it had been assumed that people lack sufficient free time to maintain current television-viewing levels while spending increasing amounts of free time on the computer. That ass...
- by pakaskwa
Mon Apr 06, 2009 3:50 pm- Forum: Critical Reasoning
- Topic: TV vs computer
- Replies: 7
- Views: 4771
average salary in Kravonia
In Kravonia, the average salary for jobs requiring a college degree has always been higher than the average salary for jobs that do not require a degree. Current enrollments in Kravonia’s colleges indicate that over the next four years the percentage of the Kravonian workforce with college degrees w...
- by pakaskwa
Mon Apr 06, 2009 3:48 pm- Forum: Critical Reasoning
- Topic: average salary in Kravonia
- Replies: 9
- Views: 10430
Linguistic capabilities and the brain
For most people, the left half of the brain controls linguistic capabilities, but some people have their language centers in the right half. When a language center of the brain is damaged, for example by a stroke, linguistic capabilities are impaired in some way. Therefore, people who have suffered ...
- by pakaskwa
Mon Apr 06, 2009 3:31 pm- Forum: Critical Reasoning
- Topic: Linguistic capabilities and the brain
- Replies: 14
- Views: 9253
- by pakaskwa
Sun Apr 05, 2009 2:12 pm- Forum: Sentence Correction
- Topic: Shark's jaw
- Replies: 11
- Views: 8536