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Statement 2... Imagine Rectangle. All angels are equal but one cannot have all 4 vertexes on a circle. Insuff. C . Agreed that statement 2 is insufficient. However, a rectangle may not be the right example. Even a rectangle is a cyclic quadrilateral - i.e., a circle can always be drawn touching the...

by 4GMAT_Mumbai

Fri Apr 27, 2012 6:52 am
Forum: Data Sufficiency
Topic: P is a polygon
Replies: 4
Views: 870

Hi Rahul, The rare questions on reflections usually involve only the x - axis, y - axis, x = y line and x = -y line. I doubt if reflections on any other line will be asked. Reflection of (a,b) on x-axis will be (a,-b) Reflection of (a,b) on y-axis will be (-a,b) Reflection of (a,b) on x=y will be (b...

by 4GMAT_Mumbai

Tue Oct 11, 2011 10:21 pm
Forum: Data Sufficiency
Topic: Reflection of lines- Are they actually tested?
Replies: 2
Views: 647

Hi zaarathelab,

I am afraid there is no drastically different way than the one that you have mentioned ...

Perhaps just a small variation would be to calculate (1.08)^2 = 1 + .0064 + .16 = 1.1664 and go from there ...

Thanks.

by 4GMAT_Mumbai

Tue Oct 11, 2011 10:08 pm
Forum: Data Sufficiency
Topic: GMATPREP:Bank Account problem
Replies: 4
Views: 2591

1. If a, b, c are integers such that b > a, is b + c > a? (1) c > a (2) abc > c Experts, what is the shortest possible to solve the above? I took 4 minutes on the first one, especially because of the 2nd statement. The question boils down to finding out whether c > 0 or c <= 0. In my opinion, the b...

by 4GMAT_Mumbai

Tue Oct 11, 2011 6:19 am
Forum: Data Sufficiency
Topic: GMAT PREP:Good question on Inequalities
Replies: 11
Views: 1400

Hi,

Handled in this thread way back in 2008 ... http://www.beatthegmat.com/standard-dev ... t8560.html

Guess it is beyond the scope of GMAT

Thanks.

by 4GMAT_Mumbai

Sat May 07, 2011 12:51 am
Forum: Problem Solving
Topic: cookies with SD
Replies: 1
Views: 607

confused mind wrote:What is the option to buy these tests in Hyderabad, India. Is there some option to buy the tests online and give the test on internet?
Hi,

Try this ... http://www.manhattangmat.com/storeitems ... 81&catid=4 I thought this might be just what you are looking for.

Thanks !

by 4GMAT_Mumbai

Thu May 05, 2011 8:31 pm
Forum: GMAT Strategy
Topic: Manhattan tests
Replies: 2
Views: 873

Hi,

I may not be the best person to pick from this basket as I have not gone through all of them.

However, I have gone through MGMAT CR and found it to be very useful in terms of techniques.

Thanks.

by 4GMAT_Mumbai

Wed May 04, 2011 9:48 pm
Forum: GMAT Strategy
Topic: CR Best strategdy in last 20 days
Replies: 3
Views: 862

Hi,

The median is (b+c)/2.

Let us consider each of the options.

A. The median could be (a+c)/2 if a = b.

B. It is (b+c)/2

C. It could be (a+d)/2 if a=b and c=d

d. It could be (b+d)/2 if c=d

E. It cannot be (c+d)/2 as b can never be equal to d.

Is it E?

Thanks. Hope it helps.

by 4GMAT_Mumbai

Wed May 04, 2011 10:08 am
Forum: Data Sufficiency
Topic: Statistics
Replies: 2
Views: 624

Hi, Statement 1: If x = 1, y = 11 If x = 2, y = 8 (I am assuming x2 stands for x^2) We are getting different values of y - depending on the value of x. Hence, insuff Statement 2: 3 - y = -11 or 11 y = 14 or -8 We are getting different values of y. Hence, insuff. Combining both 1 & 2: If y = -8, 3|x2...

by 4GMAT_Mumbai

Wed May 04, 2011 10:04 am
Forum: Data Sufficiency
Topic: MGMAT CAT 3
Replies: 4
Views: 989

Hi, I guess you have to move CR to 'Top Priority' over this week in order to stand a chance at a very good GMAT score. Some observations: 1. Try doing ONLY CR over the next two or three days. I suppose you must be pretty good at the other sections of GMAT. The human mind does a good job of coaxing y...

by 4GMAT_Mumbai

Wed May 04, 2011 6:01 am
Forum: GMAT Strategy
Topic: CR Best strategdy in last 20 days
Replies: 3
Views: 862

Hi, Question stem says 588 college teachers (1400 * 0.42) considered engaging in Res an essential goal. Statement 1: Let w be the number of women teachers. 0.5 (w) + 0.36 (1400-w) = 588. w can be figured out. Let us not spend time finding w ... Hence, suff Statement 2: We realize that 300 women and ...

by 4GMAT_Mumbai

Wed May 04, 2011 4:42 am
Forum: Data Sufficiency
Topic: GMAT Prep Question
Replies: 4
Views: 776

ques In partucular 8-hour perid, how many reveloutions did the motor of certain generator make? 1 the motor make 50 reveloutions in every second that it ran in that period 2 the generator ran total 20 mins out of every hour of that period Stmt 1: Not Suff. We do not know how long the motor ran. Stm...

by 4GMAT_Mumbai

Mon May 02, 2011 9:28 pm
Forum: Data Sufficiency
Topic: Ds
Replies: 1
Views: 538

Hi, At start, # of bacteria = x After 30 seconds, # of bacteria left = (2/3) * x After 60 seconds, # of bacteria left = (2/3) * (2/3) * x After 90 seconds, # of bacteria left = (2/3) * (2/3) * (2/3) * x After 120 seconds, # of bacteria left = (2/3) * (2/3) * (2/3) * (2/3) * x = (16/81) x Those kille...

by 4GMAT_Mumbai

Tue Mar 08, 2011 6:52 pm
Forum: Problem Solving
Topic: Antibiotic
Replies: 3
Views: 2623

Hi, Interesting Q ... Thanks ! Question stem says: p = <a constant k> * e e = <a constant m> * i So, p = k * m * i = <a new constant n> * i Statement 1: Gives relationship between e and i. Helps us find m. Great. But, does not take us anywhere as far as either k or p is concerned. Hence, insuff. Sta...

by 4GMAT_Mumbai

Wed Mar 02, 2011 7:56 pm
Forum: Data Sufficiency
Topic: index ratio relationship
Replies: 2
Views: 1193

Hi, Interesting Q ... Thanks ! 1. n is an odd number n^3 - n = (n-1) * n * (n+1) = Product of three consecutive integers We know that n is an odd number. So, the number before and after n must both be even numbers. So, n^3-n will definitely be divisible by 4. Suff 2. n^2 + n = n (n+1) is divisible b...

by 4GMAT_Mumbai

Wed Mar 02, 2011 7:46 pm
Forum: Data Sufficiency
Topic: If n is a positive integer, is n^3 - n divisible by 4?
Replies: 12
Views: 3119