Search found 153 matches
oh well! 15+12 is 27 not 37! GMAT prep is never wrong. :wink: When u use a^2 - b^2 u will get (1000+1+1000-1)(1000+1-1000+1) ------------------------------ (100+1+100-1)(100+1-100+1) =2000*2 ------ 200*2 =10 Sanja, I do appreciate your help. I'm wondering how I can get my mind to start seeing these...
- by JeffB
Thu Oct 15, 2009 7:35 am- Forum: Problem Solving
- Topic: GMATPrep Help
- Replies: 6
- Views: 1718
Re: I need your help??
In a college, some courses contribute more towards an overall GPA than other courses. For example, a science class is worth 4 points; mathematics is worth 3 points; history is worth 2 points; and English is worth 3 points. The values of the grade letters are as follows, A= 4, B=3, C=2, D=1, F=0. Wh...
- by JeffB
Wed Oct 14, 2009 3:11 pm- Forum: Problem Solving
- Topic: I need your help??
- Replies: 1
- Views: 1006
Re: 11 consecutive integers
if 11 consecutive integers are listed from least to most,what is the mean of the 11 digits? a)Average of the 1st 9 is 7 b)Average of the last 9 is 9 [spoiler]OA : D[/spoiler] For A: Since we have consecutive integers x + (x+1) etc. x + (x+1)....(x+8)= 7 You can solve for x (which is your first inte...
- by JeffB
Wed Oct 14, 2009 8:00 am- Forum: Data Sufficiency
- Topic: 11 consecutive integers
- Replies: 1
- Views: 2099
- by JeffB
Tue Oct 13, 2009 1:27 pm- Forum: Sentence Correction
- Topic: SC: Buildscape
- Replies: 3
- Views: 824
- by JeffB
Tue Oct 13, 2009 8:16 am- Forum: Data Sufficiency
- Topic: Set S
- Replies: 6
- Views: 1510
- by JeffB
Tue Oct 13, 2009 8:11 am- Forum: Data Sufficiency
- Topic: Working together
- Replies: 5
- Views: 1479
Re: q 33
From A to Cengg.manik wrote:33. Pat will walk from A to C to B through the grid section , how many possible routes can pat take that have the minimum possible length ?
OA - 20
5!/3!2! = 10
C to B
Only 2 ways to go
10 * 2 = 20
- by JeffB
Tue Oct 13, 2009 7:58 am- Forum: Problem Solving
- Topic: q 33
- Replies: 1
- Views: 1242
Re: Scientists
"No matter how have scientists" is the definition of awkwardcrackgmat007 wrote:Explanation for E is that the sentence construction is awkward. Would it be correct if it were to say 'No matter how scientists have determined to measure'?
Thoughts?
- by JeffB
Tue Oct 13, 2009 7:43 am- Forum: Sentence Correction
- Topic: Scientists
- Replies: 3
- Views: 1028
hmm
The last one is definitely tough....It's between C and D...and don't really like the concern.
I'll try C lol
For 2: I would go with D because Fossils is the subject
- by JeffB
Mon Oct 12, 2009 8:41 am- Forum: Sentence Correction
- Topic: 3 SCs
- Replies: 4
- Views: 1266
Re: CAT #1 700-800 Level Question Recipriocal Averages
The number x is the average (arithmetic mean) of the positive numbers a and b, and the reciprocal of the number y is the average (arithmetic mean) of the reciprocals of a and b. In terms of a and b, x – y = ? (A)A^2 + b^2 / 2(A+B) (B)(A-B)^2 / 2(A+B) (C)A+B / 2 (D)A-B / 2 (E)0 I answered this que...
- by JeffB
Sun Oct 11, 2009 1:51 pm- Forum: Problem Solving
- Topic: CAT #1 700-800 Level Question Recipriocal Averages
- Replies: 5
- Views: 4177
Re: its vs their?
The members of the Organization of Petroleum Exporting Countries usually comply with their decisions, which are designed to maximize the long term profits of member nations. their decisions, which are designed to maximize its decisions, which are designed to maximize their decisions that are design...
- by JeffB
Sun Oct 11, 2009 10:15 am- Forum: Sentence Correction
- Topic: its vs their?
- Replies: 16
- Views: 18990
Re: Is it
Wouldn't you want to included 3....300,002 > 300,000?enniguy wrote:28812?
Basically there are 7 digits (0,1,2,3,4,5,6). So,
3 * 7 * 7 * 7 * 7 * 4.
4 because it has to be even and 3 because the digits have to be greater than 3,00,.
Please confirm.
- by JeffB
Sun Oct 11, 2009 5:52 am- Forum: Problem Solving
- Topic: Q-38
- Replies: 6
- Views: 3412
ahh - look at the post counts of most of these idiots that post with 700+ scores....usually about 0 to maybe 1 post.
- by JeffB
Sat Oct 10, 2009 5:48 pm- Forum: I just Beat The GMAT!
- Topic: Forget about it
- Replies: 14
- Views: 3399
- by JeffB
Fri Oct 09, 2009 6:59 am- Forum: I just Beat The GMAT!
- Topic: GMAT 640 (Q50 93%, V26 39%) - Need advice on what to do next
- Replies: 10
- Views: 3412
Re: Tough question GMAT prep 1 definately a 700+ level quest
A thin piece of wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and square regions in terms of r? 1) πr^2 ...
- by JeffB
Thu Oct 08, 2009 6:22 pm- Forum: Problem Solving
- Topic: Tough question GMAT prep 1 definately a 700+ level question
- Replies: 2
- Views: 1103