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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...
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...
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 ...
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...
Handled in this thread way back in 2008 ... http://www.beatthegmat.com/standard-dev ... t8560.html
Guess it is beyond the scope of GMAT
Hi,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?
Try this ... http://www.manhattangmat.com/storeitems ... 81&catid=4 I thought this might be just what you are looking for.
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.
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.
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...
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...
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 ...
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...
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...
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...
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