Search found 496 matches
x + 2y + 3z = 2 --- i
x + y - z = 0 ----ii
2x + 2y - z = 1 ----iii
Multiply equation ii by 2
2x+2y=2z. Substitute value of 2x+2y in equation iii
2z-z=1 or z=1
x+2y=-1 --- iv
x+y =1 ---v
Solving , we get, y=-2
- by sl750
Mon Dec 05, 2011 10:45 pm- Forum: Problem Solving
- Topic: Value of y
- Replies: 4
- Views: 1397
2x-y=11 or y=2x-11. Substitute value of y in 4x+y
6x-11. Since x is an integer. Replace x with values such as 1,2,3.. so on. Only choice D CANNOT be the value of 6x-11
- by sl750
Mon Dec 05, 2011 10:42 pm- Forum: Problem Solving
- Topic: PS - Integers
- Replies: 6
- Views: 1834
Bren
If you plan to take it again make sure you analyze your errors during practice. Keep a log of the type of errors you are making and if possible practice more of those type of questions. That will make a difference
- by sl750
Sun Nov 20, 2011 7:25 am- Forum: I just Beat The GMAT!
- Topic: FOUR TIME AND STILL NOT HOME FREE
- Replies: 5
- Views: 2066
Number of integers for x coordinate=10 Number of integers for y coordinate=11 The number of coordinates (x,y)for point P can be selected in 10*11 The number of coordinates (x,y) for point Q = 9*11 ; Only value of x changes, as PQ is parallel to the x-axis The number of coordinates (x,y)for point R =...
- by sl750
Tue Nov 15, 2011 7:01 am- Forum: Problem Solving
- Topic: Elementary combinatorics
- Replies: 2
- Views: 2026
Conclusion: it generally makes sense to take the investment companies' economists more seriously
Why: Because the above economists risk their jobs to make such claims
Choice B gives us that underlying assumption supporting this argument
- by sl750
Fri Oct 28, 2011 4:07 am- Forum: Critical Reasoning
- Topic: Tough CR from veritas CR2 book
- Replies: 15
- Views: 3452
Many of the students at the International School speak French or German or both. Among the students who speak French, four times as many speak German as don't . In addition, 1/6 of the students who don't speak German do speak French. What fraction of the students speak German? (1) Exactly 60 studen...
- by sl750
Mon Oct 24, 2011 9:57 am- Forum: Data Sufficiency
- Topic: French or German
- Replies: 6
- Views: 3576
- by sl750
Fri Oct 21, 2011 12:20 pm- Forum: Data Sufficiency
- Topic: Interesting DS - Three sets
- Replies: 4
- Views: 1337
You are the only company so far offering 40+ full length CAT's. I hope it is not a set of questions you've collected from various sources and bundled it to make a full length CAT
- by sl750
Fri Oct 21, 2011 11:03 am- Forum: Problem Solving
- Topic: Problem on Permutations and combinations
- Replies: 4
- Views: 1290
Both the question and the answer have been wrongly transcribed. The original poster seemed pretty confident he/she had it transcribed correctly
- by sl750
Fri Oct 21, 2011 10:44 am- Forum: Problem Solving
- Topic: GMAT prep
- Replies: 13
- Views: 4481
Let the smallest number be s
The largest number is 3s+20
s _ 55 _ 3s+20
We want to maximize the range, therefore 3s+20-s = max range
2(s+10) = Range is a multiple of 2
From the choices only A and E satisfy the L.H.S. Between the two choices, we pick the one with the maximum range. Hence A
- by sl750
Fri Oct 21, 2011 10:27 am- Forum: Problem Solving
- Topic: largest range
- Replies: 3
- Views: 1293
Interesting fact there, yet I find it absurd because if the government or whoever is responsible for doling out financial aid to foster couples, they might as well redirect that aid to the biological mother
- by sl750
Fri Oct 21, 2011 9:58 am- Forum: Sentence Correction
- Topic: Marilyn Monroes
- Replies: 7
- Views: 1430
It is quite the contrary to what you are saying, adi. The research finds a correlation between being married and people staying happy and healthy. It is the commentators who take the result of the study one step further and conclude that marriage brings about happiness. In order for the commentators...
- by sl750
Fri Oct 21, 2011 8:08 am- Forum: Critical Reasoning
- Topic: Assumption !!
- Replies: 4
- Views: 1304
Conclusion: The publicity campaign has been successful as the author draws a correlation between the campaign and the rise in number of harassment reports being filed with the attorney's office A - This is irrelevant as it deals with the nature of complaints B - This is talking about what follows af...
- by sl750
Fri Oct 21, 2011 7:56 am- Forum: Critical Reasoning
- Topic: Not a convincing OA - Mgmat
- Replies: 2
- Views: 1146
- by sl750
Fri Oct 21, 2011 7:43 am- Forum: Sentence Correction
- Topic: SC- Kashmir government
- Replies: 4
- Views: 1362
Resulting from the repeated destruction by fire of parts of the Forbidden City of ancient Nanjing, the name for what today is Beijing, the Chinese people of the Ming Dynasty lost countless books, works of art and calligraphy, and other treasures and found themselves in an almost constant state of r...
- by sl750
Fri Oct 21, 2011 2:14 am- Forum: Sentence Correction
- Topic: Vague SC
- Replies: 7
- Views: 1335