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Contrary to the scholarly wisdom of the 1950’s and early 1960’s that predicted the processes of modernization and rationalization would gradually under mine it , ethnicity is a worldwide phenomenon of increasing importance. (A) would gradually undermine it (B) to be a gradual undermining of it ...

by rakeshd347

Thu Oct 24, 2013 2:26 pm
Forum: Sentence Correction
Topic: Need help in this SC
Replies: 4
Views: 1589

I am struggling with these two SC questions and I need some explanations for their answers please: Question 1: 47. According to scientists at the University of California, the pattern of changes that have occurred in human DNA over the millennia indicate the possibility that everyone alive today mi...

by rakeshd347

Thu Oct 24, 2013 2:22 pm
Forum: Sentence Correction
Topic: I cant figure out the answers for 2 SC questions
Replies: 4
Views: 1293

Good DS question

If vertices of a triangle have coordinates (−1,1), (4,1), and (x,y), what is the area of the triangle?
(1) y^2−2y−3=0

(2) x^2=y^2

by rakeshd347

Mon Oct 21, 2013 7:47 pm
Forum: Data Sufficiency
Topic: Good DS question
Replies: 2
Views: 1156

Buster leaves the trailer at noon and walks towards the stud

Buster leaves the trailer at noon and walks towards the studio at a constant rate of B miles per hour. 20 minutes later, Charlie leaves the same studio and walks towards the same trailer at a constant rate of C miles per hour along the same route as Buster. Will Buster be closer to the trailer than ...

by rakeshd347

Mon Oct 21, 2013 7:11 pm
Forum: Problem Solving
Topic: Buster leaves the trailer at noon and walks towards the stud
Replies: 3
Views: 2226

heyguys... i chkd the question...d source is SPJAT.. n d OA is B I am really suspected on the OA. first, this question has never been discussed in any forum. Second let us say that OA is B for argument sake. So the total distance is 1792. So the man covered 896km at the speed of 84km/hr and 896 at ...

by rakeshd347

Mon Oct 21, 2013 2:53 pm
Forum: Problem Solving
Topic: dist
Replies: 8
Views: 3399

Quick Sell Outlet sold a total of 40 televisions, each of which was either a Model P TV or A Model Q TV. Each Model P sold for $p and each model Q sold for $q. The average selling price of the 40 televisions was $141. How many of the 40 televisions were Model P Televisions? 1 - Model P sold for $30...

by rakeshd347

Mon Oct 21, 2013 12:57 pm
Forum: Data Sufficiency
Topic: GMATPREP DS
Replies: 3
Views: 1222

AB is the diameter of the circle. CD is parallel to AB. What is the length of minor arc CD? (1) The radius of the circle is 12. (2) The measure of ∠CAB is 30º http://s15.postimg.org/4n48ehf47/370.jpg Answer C We can answer this question without performing any calculations. Instead, we can use so...

by rakeshd347

Mon Oct 21, 2013 12:19 pm
Forum: Data Sufficiency
Topic: Good DS question :
Replies: 9
Views: 6269

The United States has the largest trade deficit of any country on Earth, other nations, such as China and Japan, holding stores of US dollars that increase each year. (A) other nations, such as China and Japan, holding (B) and other nations, like China and Japan, holding (C) with other nations, lik...

by rakeshd347

Mon Oct 21, 2013 12:11 pm
Forum: Sentence Correction
Topic: The United States has the largest trade deficit of any
Replies: 1
Views: 1719

A man completes a journey in 40 hours. He travels half of the journey’s distance at the rate of 84 km/hr and the other half of the journey’s distance at the rate of 96 km/hr. Find the total distance that the man covered during the journey? (A)448 km (B) 1792 km (C) 896 km (D)908 km Hi Mate, As ...

by rakeshd347

Mon Oct 21, 2013 12:06 pm
Forum: Problem Solving
Topic: dist
Replies: 8
Views: 3399

Great explanation, Vivek! A big takeaway here is that, when it comes to Standard Deviation, the GMAT LOVES to test one's knowledge of the fact that standard deviation = 0 when all of the numbers in a set are identical. Cheers, Brent Hi Brent, I knew that same numbers will have 0 SD. However, i got ...

by rakeshd347

Mon Oct 21, 2013 2:10 am
Forum: Data Sufficiency
Topic: GMATPREP DS
Replies: 6
Views: 1528

Rakesh, SD varies with Mean i.e. the farther the numbers from mean.. greater will be SD. So, {A} & {E} are surely out I am stuck between {B}, {C} & {D}. I know we can solve and find, but GMAC doesn't want us to do so. However, if the question had been "which of the combination will result in lowest...

by rakeshd347

Mon Oct 21, 2013 2:06 am
Forum: Problem Solving
Topic: Difficult Math Question #50 - Standard Deviation
Replies: 16
Views: 8889

Rakesh, SD varies with Mean i.e. the farther the numbers from mean.. greater will be SD. So, {A} & {E} are surely out I am stuck between {B}, {C} & {D}. I know we can solve and find, but GMAC doesn't want us to do so. However, if the question had been "which of the combination will result in lowest...

by rakeshd347

Mon Oct 21, 2013 2:03 am
Forum: Problem Solving
Topic: Difficult Math Question #50 - Standard Deviation
Replies: 16
Views: 8889

Rakesh, SD varies with Mean i.e. the farther the numbers from mean.. greater will be SD. So, {A} & {E} are surely out I am stuck between {B}, {C} & {D}. I know we can solve and find, but GMAC doesn't want us to do so. However, if the question had been "which of the combination will result in lowest...

by rakeshd347

Mon Oct 21, 2013 1:59 am
Forum: Problem Solving
Topic: Difficult Math Question #50 - Standard Deviation
Replies: 16
Views: 8889

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 Answe...

by rakeshd347

Mon Oct 21, 2013 1:17 am
Forum: Problem Solving
Topic: Difficult Math Question #50 - Standard Deviation
Replies: 16
Views: 8889

Hi rakeshd347, I'm all for style rules/patterns, but standard grammar rules come first. In this SC, regardless of whether you use the word "including" or "being", you still need to follow parallelism rules. In the first part of the sentence, the "format" is "author, apostrophe, book title", so the ...

by rakeshd347

Mon Oct 21, 2013 1:11 am
Forum: Sentence Correction
Topic: Usage of including? expert help please
Replies: 5
Views: 1761