Search found 126 matches
- by ssuarezo
Sun Jun 20, 2010 7:26 am- Forum: Problem Solving
- Topic: For a certain race
- Replies: 4
- Views: 2225
If x is an even interger, which of the following must be an odd integer? a- 3x/2 b- 3x/2 + 1 c- 3x^2 d- (3(x)^2)/2 e- (3(x)^2)/2 + 1 OA e To me, b, e were odds, so I chose one: b , wrong answer. Can anyone explain this please ? Thanks Silvia. The question system says MUST BE. Substitute X=2, in opt...
- by ssuarezo
Sun Jun 20, 2010 7:21 am- Forum: Problem Solving
- Topic: If x is an even interger
- Replies: 6
- Views: 1854
- by ssuarezo
Sun Jun 20, 2010 7:11 am- Forum: Problem Solving
- Topic: if the two regions above
- Replies: 4
- Views: 2689
All points (x,y)
All points (x,y) that lie before line l, satisfy which of the following inequalities? a- y < 2x + 3 b- y < -2x + 3 c- y < -x + 3 d- y < 1x/2 + 3 e- y < -1x/2 + 3 The image is here http://s3.postimage.org/aw2ur.png I tried y=3, x=1, so a---> 3 < 5 (V) d--> 3 < 3.5 (V) but the OA is e , can anyone exp...
- by ssuarezo
Sun Jun 20, 2010 7:03 am- Forum: Problem Solving
- Topic: All points (x,y)
- Replies: 2
- Views: 1757
If x is an even interger
If x is an even interger, which of the following must be an odd integer?
a- 3x/2
b- 3x/2 + 1
c- 3x^2
d- (3(x)^2)/2
e- (3(x)^2)/2 + 1
OA e
To me, b, e were odds, so I chose one: b, wrong answer. Can anyone explain this please?
Thanks
Silvia.
- by ssuarezo
Sun Jun 20, 2010 6:42 am- Forum: Problem Solving
- Topic: If x is an even interger
- Replies: 6
- Views: 1854
My pleasure. A word of advice: ALWAYS look at the answer choices. Ever hear of the song "Look to the Rainbow"? When taking the GMAT, look to the answers. They often will guide you down the right path. Never heard the song, but I'm going to download it now ... Thanks for your good advice G...
- by ssuarezo
Fri Jun 18, 2010 9:06 am- Forum: Problem Solving
- Topic: The number of stamps
- Replies: 9
- Views: 1450
Hey Silvia, So, we know that Jane starts the month with $600 in the account, and we know she makes a payment of $300. We're also told that there are no other transactions. So, that means the end-of-the-day balance for every single day in this month has to be either $600 or $300. The problem is, we ...
- by ssuarezo
Thu Jun 17, 2010 1:27 pm- Forum: Data Sufficiency
- Topic: On Jane's credit card
- Replies: 3
- Views: 1307
universal condition 6 countries total representatives 75 1) one of the country sent 41 so remaining countries can send 34 remaining candidate in many may let the five candidate have a-2,a-1,a,a+1,a+2 Amising: Why do you assume that the numbers are consecutives? why a-2,a-1,a,a+1,a+2? this could be ...
- by ssuarezo
Thu Jun 17, 2010 12:48 pm- Forum: Data Sufficiency
- Topic: Six countries
- Replies: 6
- Views: 1972
in the room 2 pairs of sibling and 3 siblings are present if 2 individuals so that they are siblings can be done by selecting any one of the 2 pair in 2 ways any any 2 of the 3 siblings in 3C2=3 ways How does "4 people have exactly 1 sibling in the room and 3 people have exactly 2 siblings in ...
- by ssuarezo
Thu Jun 17, 2010 11:41 am- Forum: Problem Solving
- Topic: Probability
- Replies: 9
- Views: 1809
For anyone who struggles with ratios, this problem can be solved quite easily -- even efficiently -- by using the following technique: Guess and Check Here's the situation in the problem: Original ratio: 5/3 Exchange: Kaye loses 10, Albert gets 10 New ratio: 7/5 Let's guess and check! Since the ans...
- by ssuarezo
Thu Jun 17, 2010 8:55 am- Forum: Problem Solving
- Topic: The number of stamps
- Replies: 9
- Views: 1450
Am not sure between C & D Premise: Female rhinoceroses that have been frequently recollared (tranquilized)have significantly lower fertility rates than uncollared females. Conclision: Probably, therefore, some substance in the tranquilizer inhibits fertility. C. How often park rangers need to u...
- by ssuarezo
Wed Jun 16, 2010 8:02 pm- Forum: Critical Reasoning
- Topic: GMATPrep - Park Rangers, Rhinoceroses, fertility
- Replies: 19
- Views: 11826
- by ssuarezo
Wed Jun 16, 2010 7:57 pm- Forum: Critical Reasoning
- Topic: The others being = correct?
- Replies: 2
- Views: 970
- by ssuarezo
Wed Jun 16, 2010 7:52 pm- Forum: Critical Reasoning
- Topic: According to a promotional material
- Replies: 2
- Views: 2614
- by ssuarezo
Wed Jun 16, 2010 7:47 pm- Forum: Critical Reasoning
- Topic: With a new record number of companies
- Replies: 2
- Views: 1039
let the total number of stamp be X so kay had 5x stamps alberto had 3x stamp after kay gave 10 stamp to alberto now kay has 5x-10 stamp alberto has 3x+10 stamp so we know 5x-10/3x+10=7/5 solving we get x as 30 case 1)kaye had how many more stamps than Alberto before the transaction of stamps took p...
- by ssuarezo
Wed Jun 16, 2010 7:26 pm- Forum: Problem Solving
- Topic: The number of stamps
- Replies: 9
- Views: 1450