Search found 379 matches
- by sreak1089
Sun Jul 04, 2010 10:19 am- Forum: I just Beat The GMAT!
- Topic: Hold on let me change my swag- How Osirus went from a 680 to
- Replies: 24
- Views: 7664
Combinatorics problem !
A lottery game works as follows: The player draws a numbered ball at random from an urn containing five balls numbered 1,2,3,4 and 5. If teh number on the ball is even, the player loses the game and receives no points; if the number on the ball is odd, the player receives the number of points indica...
- by sreak1089
Sat Jul 03, 2010 9:30 am- Forum: Problem Solving
- Topic: Combinatorics problem !
- Replies: 4
- Views: 1615
- by sreak1089
Mon Jun 28, 2010 11:12 pm- Forum: Problem Solving
- Topic: kth term - sequence
- Replies: 8
- Views: 1966
Assume 'x' is the number of books that were loaned. 75-x is the number of books that are remaining after books were loaned. The number of books that were returned are 0.65*x. Thus we have, 75 - x + 0.65*x = 68 75 - 0.35x = 68 7 = 0.35x [spoiler] x = 20 is the answer.[/spoiler]
- by sreak1089
Mon Jun 28, 2010 10:59 pm- Forum: Problem Solving
- Topic: Can anyone please help me with this question.......
- Replies: 3
- Views: 1103
You know that +ve terms are: 1/2, 1/8, 1/32, 1/128, 1/512 -ve terms are: -1/4, -1/16, -1/64, -1/512, -1/1024 Thus the sum of the series: 1/4 + (1/16 + 1/64 + 1/512 + 1/1024) Sum in the bracket should be less than 1/4, hence the answer should be b/w 1/4 & 1/2. Hence D
- by sreak1089
Mon Jun 28, 2010 10:53 pm- Forum: Problem Solving
- Topic: kth term - sequence
- Replies: 8
- Views: 1966
- by sreak1089
Fri Jun 25, 2010 1:22 am- Forum: Sentence Correction
- Topic: Baltic Sea Sediments
- Replies: 12
- Views: 5046
Perfect numbers. Numbers such as 6, 28, 496, 8128, etc are called perfect numbers because, their factors (excluding the original number) add up to the original number. machoman bhai...i guess these numbers such as 6 ,28... have certain names...and they fall into some concept category and just additi...
- by sreak1089
Fri Jun 25, 2010 12:49 am- Forum: Data Sufficiency
- Topic: Manhattan GMAT 700+ Challenge Problem
- Replies: 9
- Views: 5808
It is given that k = 5.1x10^n. So for any value of 'n', k can never be a negative number. Hence, only the positive square root is the solution. Thanks for that, but I actually understood statement 1. I got stuck on statement 2, can you give me a simplified version of that? Why can't the negative roo...
- by sreak1089
Wed Jun 23, 2010 11:27 pm- Forum: Data Sufficiency
- Topic: OG #12 DS 151 Explanation !!!!!
- Replies: 15
- Views: 4025
Stmt # 1: Says |x+1| = 2|x-1| => x+1 = 2(x-1) or x+1 = -2(x-1) => x = 3 => x = 1/3 => x = 3 or 1/3 Substitute x=3, we have |x+1| = 4 = 2|x-1| = 2|2| = 4. Hence x = 3 is valid solution. Substitute x=1/3, we have |x+1| = 4/3 = 2|-2/3| = 4/3. Hence x = 1/3 is also a valid solution. If x = 3 |x| > 1 and...
- by sreak1089
Wed Jun 23, 2010 10:22 pm- Forum: Data Sufficiency
- Topic: Tough DS inequalities
- Replies: 2
- Views: 1036
Wonderful !! That's called a Student's delight 
I like different approaches to solving this problem.
Weighted average concept clearly got drilled down.. Thanks a lot.
Testluv wrote:Wow. Three teachers posted virtually simultaneously.
- by sreak1089
Tue Jun 15, 2010 7:44 pm- Forum: Problem Solving
- Topic: Convenience store - Average question
- Replies: 7
- Views: 5275
Convenience store - Average question
A convenience store currently stocks 48 bottles of mineral water. The bottles have two sizes of either 20 or 40 ounces each. The average volume per bottle the store currently has in stock is 35 ounces. How many 40 ounce bottles must be sold for the average volume per bottle to be reduced to 25 ounce...
- by sreak1089
Mon Jun 14, 2010 8:46 pm- Forum: Problem Solving
- Topic: Convenience store - Average question
- Replies: 7
- Views: 5275
Responding to growing demand
Responding to growing demand for high-end vehicles, the interiors of the newest models are so luxurious that they sell for nearly twice the price of last year's models. A) the interiors of the newest models are so luxurious that they sell B) the interiors of the newest models are so luxurious that ...
- by sreak1089
Thu Mar 11, 2010 1:31 am- Forum: Sentence Correction
- Topic: Responding to growing demand
- Replies: 2
- Views: 1742
WOW !! Exactly the kind of advice that I got from my GMAT class tooo :) Reading Comprehension Reading Comprehension is the verbal topic that gave me the most trouble on my GMAT exam, but I believe I have finally figured out how to approach it (thanks to Veritas Prep). When you are reading the passag...
- by sreak1089
Wed Mar 10, 2010 9:55 am- Forum: GMAT Strategy
- Topic: The Retake: Osirus' blog
- Replies: 91
- Views: 33817
Yes OA is B. This was a cool problem, which was discussed in my quant class. I enjoyed the logic behind it.
- by sreak1089
Mon Mar 08, 2010 9:43 pm- Forum: Data Sufficiency
- Topic: Sequence Problem
- Replies: 6
- Views: 2393
Sequence Problem
In the sequence a1, a2, a3, ...., a15, an = an-1 + k (read n, n-1 as subscripts), where 2<=n<=15 and k is a non-zero constant. How many terms in the sequence are greather than 10?
1) a1 = 24
2) a8 = 10
- by sreak1089
Sat Mar 06, 2010 8:24 pm- Forum: Data Sufficiency
- Topic: Sequence Problem
- Replies: 6
- Views: 2393