Search found 56 matches
- by nycknicks11
Thu Jun 09, 2011 9:58 pm- Forum: Problem Solving
- Topic: Joan
- Replies: 2
- Views: 1185
- by nycknicks11
Thu Jun 09, 2011 9:49 pm- Forum: Data Sufficiency
- Topic: cars
- Replies: 2
- Views: 984
you ever use the binary method? 70% of the time on prob. problem I prefer to use combination. 90% of those times you have to reduce it to a binary problem. Tanya prepared four different letters to be sent to four different addresses. For each letter, she prepared an envelope with its correct address...
- by nycknicks11
Tue Jun 07, 2011 11:05 pm- Forum: Data Sufficiency
- Topic: HARD PROB
- Replies: 15
- Views: 3217
good stuff. Do you know why my method of using binary (R or W) for 4 slots is wrong intuitively? I use the binary method all the time. Kinda scary that it does not work sometimes. (Here's the reason why it doesn't work. This is not intuitive though. 2^4 represents ALL combination of R or W arranged ...
- by nycknicks11
Tue Jun 07, 2011 10:33 pm- Forum: Data Sufficiency
- Topic: HARD PROB
- Replies: 15
- Views: 3217
HARD PROB
Tanya prepared four different letters to be sent to four different addresses. For each letter, she prepared an envelope with its correct address. If the 4 letters are to be put into the envelopes at random, what is the probability that only one letter will be put into the envelope with its correct a...
- by nycknicks11
Tue Jun 07, 2011 10:10 pm- Forum: Data Sufficiency
- Topic: HARD PROB
- Replies: 15
- Views: 3217
Positives/Negatives
If ab does not equal 0 and points (-a, b) and (-b, a) are in the same quadrant of the xy-plane, is point (-x,y) in this same quadrant? 1) xy > 0 2) ax > 0 Can someone explain why I am wrong here? Problem: from the problem given, we know that a,b have the same sign but we don't know what it is. ++ or...
- by nycknicks11
Tue Jun 07, 2011 8:25 pm- Forum: Data Sufficiency
- Topic: Positives/Negatives
- Replies: 3
- Views: 1343
oops. I meant 3q+R. r= remainder.
Hey anurag, i plugged in 1 for the equation. I got 8 which has a remainder of 2.
- by nycknicks11
Mon May 30, 2011 10:52 pm- Forum: Data Sufficiency
- Topic: Remainder
- Replies: 5
- Views: 1025
Remainder
What is remainder when X^2-4x+11 is divided by 3?
1) x+1 is divisible by 3
2) x-2 is divisible by 3
My way:
1) X^2-4x+11=3q
2) subtract 7 both sides. x^2-4x+4=3q-7
3) (x-2)(x-2)=3q-7
4) since x+1 is divisible by 3; x-2 is divisible by 3. Thus remainder is 2.
Can someone confirm.
- by nycknicks11
Mon May 30, 2011 10:21 pm- Forum: Data Sufficiency
- Topic: Remainder
- Replies: 5
- Views: 1025
- by nycknicks11
Mon May 30, 2011 5:54 pm- Forum: Sentence Correction
- Topic: SVA
- Replies: 14
- Views: 1743
- by nycknicks11
Mon May 30, 2011 12:25 am- Forum: Sentence Correction
- Topic: SVA
- Replies: 14
- Views: 1743
- by nycknicks11
Sun May 29, 2011 9:50 pm- Forum: I just Beat The GMAT!
- Topic: I beat....2/3 of the GMAT
- Replies: 6
- Views: 1924
Awesome thanks. Summarizing some takeways. Can you give me a thumbs up/down on these points? Thanks. 1) Consecutive "ing" modifier is ok. others are not. 2) consecutive "ing" modifier modifies the main subject. (Main clause, modifier 1, modifier 2 (modifier 2 modifies main clause...
- by nycknicks11
Sun May 29, 2011 8:00 pm- Forum: Sentence Correction
- Topic: gmat prep modifiers
- Replies: 3
- Views: 1295
I have no idea whether they are correct cuz I made it up but here's another data point: There is a difference in the way the term turnover and the term revenue are used in business across ... This is deemed correct. a) Is is part of difference. Fine. b) Let's take it out and just view: The way the t...
- by nycknicks11
Sun May 29, 2011 4:49 pm- Forum: Sentence Correction
- Topic: SVA
- Replies: 14
- Views: 1743
SVA
Just a quick question here about SVA. I made these up. What is correct in each case? I know that "and" turns things plural but I've seen many cases in GMAT where this can be tricky. Can an expert please elaborate. 1) The way Scott and John run is/are funny 2) The way Scott runs and the way...
- by nycknicks11
Sun May 29, 2011 5:03 am- Forum: Sentence Correction
- Topic: SVA
- Replies: 14
- Views: 1743
QCircles
Two questions here: 1) Can you assume that the arc here is generated by a 1/4 of a circle? ("Arc is centered at C") 2) If its not, I don't see how the arc is relevant in this problem Here's how I solved it (assuming 1/4 circle). a) Since its part of the circle then the radius is 8 b) Since...
- by nycknicks11
Sun May 29, 2011 4:33 am- Forum: Problem Solving
- Topic: QCircles
- Replies: 2
- Views: 1069