Search found 195 matches
Ibora
A drug that is highly effective in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is quite rare in the wild. It takes the bark of 5,000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug mus...
- by sankruth
Thu Jan 24, 2008 11:44 am- Forum: Critical Reasoning
- Topic: Ibora
- Replies: 12
- Views: 6349
- by sankruth
Wed Jan 23, 2008 1:14 pm- Forum: Problem Solving
- Topic: Doubles
- Replies: 9
- Views: 2468
- by sankruth
Wed Jan 23, 2008 11:35 am- Forum: Data Sufficiency
- Topic: integer..
- Replies: 4
- Views: 1591
Oh...the solution briefly explains how but I cant understand it... Here is the explanation... out of 8 people one team can be formed in 8c2 ways. 8c2*6c2*4c2*2c2= 2520. The answer is 105. Divide 2520 by 4! to remove the multiples ( for example: (A,B) is same as ( B,A) ) But for Combinations A-B is t...
- by sankruth
Wed Jan 23, 2008 8:38 am- Forum: Problem Solving
- Topic: Doubles
- Replies: 9
- Views: 2468
I got this problem from the set of difficult Math questions in BTG. The answer provided in that document is 105. Also the reason I feel 2520 is not the correct answer is because the question is asking how many ways the group can be divided into 4 teams of 2 each, not how many different teams can be ...
- by sankruth
Wed Jan 23, 2008 8:33 am- Forum: Problem Solving
- Topic: Doubles
- Replies: 9
- Views: 2468
Doubles
A group of 8 friends want to play doubles tennis. How many different ways can the group be divided into 4 teams of 2 people?
A. 420
B. 2520
C. 168
D. 90
E. 105
Can someone please explain the solution to this problem?
- by sankruth
Wed Jan 23, 2008 6:59 am- Forum: Problem Solving
- Topic: Doubles
- Replies: 9
- Views: 2468
From St 1, X could be 7 or 8. So INSUFF.camitava wrote:I will go for D. Because from 1 also, u can get the value of X. In the number, there is only digit greater than X. As 9 is the greatest, X should be 8.
And for stmt-2, Sankruth has already mentioned the reason ...
- by sankruth
Wed Jan 23, 2008 1:09 am- Forum: Data Sufficiency
- Topic: another simple one
- Replies: 6
- Views: 1768
I would assume that Perimeter of the floor is not required.
My answer is B
The digits not among the 1st six are 0, 4, 7 and 8. So 8 is the largest.
- by sankruth
Tue Jan 22, 2008 10:44 pm- Forum: Data Sufficiency
- Topic: another simple one
- Replies: 6
- Views: 1768
There is a document with 100 difficult math questions on BTG, section GMAT Math.
Less than a week to go and it is not doing much good to my confidence though... 
- by sankruth
Tue Jan 22, 2008 7:39 am- Forum: Problem Solving
- Topic: SD problem
- Replies: 5
- Views: 1652
St 1: SUFF If diagonals are perpendicular bisectors of each other then fugure is a Square or Rhombus. St2 : SUFF If 4 sides are equal, then figure must be a square or rhombus. Square is Rhombus where both diagonals have equal length and are perpendicular bisectors of each other So, D. Hope that helps!
- by sankruth
Tue Jan 22, 2008 6:06 am- Forum: Data Sufficiency
- Topic: Why the answer is D
- Replies: 5
- Views: 3124
SD problem
A set of data consists of the following 5 numbers: 0,2,4,6, and 8. Which two numbers, if added to create a set of 7 numbers, will result in a new standard deviation that is close to the standard deviation for the original 5 numbers? A). -1 and 9 B). 4 and 4 C). 3 and 5 D). 2 and 6 E). 0 and 8 My und...
- by sankruth
Tue Jan 22, 2008 4:03 am- Forum: Problem Solving
- Topic: SD problem
- Replies: 5
- Views: 1652
The OA is A ... but I cant figure out the rationale behind it. This sentence is from 1000SC, where not all answers are correct. I chose B: the part of sentence after the comma (,) describes the communal ownership. The problem I had with E was it says 'land that had been a pre-Columbian form of owner...
- by sankruth
Mon Jan 21, 2008 1:20 pm- Forum: Sentence Correction
- Topic: Error type??
- Replies: 6
- Views: 2232
Error type??
At the time of the Mexican agrarian revolution, the most radical faction, that of Zapata and his followers, proposed a return to communal ownership of land, to what had been a pre-Columbian form of ownership respected by the Spaniards . (A) land, to what had been a pre-Columbian form of ownership re...
- by sankruth
Mon Jan 21, 2008 11:46 am- Forum: Sentence Correction
- Topic: Error type??
- Replies: 6
- Views: 2232
St 1
x - y is Integer
x = 1.5; y = 0.5
x+y = 2 (Int)
x-y = 1 (Int)
But y not Integer. So St1 INSUFF
St 2
x + 2y = (x + y) + y
(Integer + Non Integer) CANNOT add up to an Integer. Since (x + y) is Integer, s y must be an Integer.
SUFF, Hence B
- by sankruth
Mon Jan 21, 2008 10:37 am- Forum: Data Sufficiency
- Topic: integer..
- Replies: 4
- Views: 1591
Radius of larger circle = R
Radius of smaller circle = r
2.Pi.(R-r) = ?
St1
Pi(R^2) - Pi(r^2) = 4
Pi[R^2 - r^2] =4
(R+r)(R-r) = 4/Pi
Not Suff
St2
R-r = 2
Since 2 & Pi are constants, B is SUFF
So B
- by sankruth
Mon Jan 21, 2008 9:30 am- Forum: Data Sufficiency
- Topic: geometry
- Replies: 3
- Views: 1660