cubicle

Let's See The question is asking is distance between x-y is greater than distance of x from 0 minus distance of y from 0 the answer will be yes or no. When this kind of scenario possible? Draw a number line if x and y both positive and y what if x and y both are of same sign? then the scenario asked can never be true. Again draw a number line and see. Hence XY> 0 the answer is NO. Choose B HTH as I am tackling GMAT probs after 9 long months and almost an equal number of dings from B-Schools :-P

p =15! prime numbers within 15! 2, 3, 5, 7, 11,13 only 57 has a prime divisor 19 not in p's factor box hence 57---E is the answer. what is oa?

by putting answr choices back in q 3) what is oa?

13! = x expression reduces to x^8 - x^4 =a so clip 2 says (x^8 - x^4)/x^4 ==> x^4 -1. 13! will end in 0 hence .......0 -1 = ........9 unit digit 9

IMO B ) III only. what is OA?

Imo it is A) 400 -----> 1000 - 500 (even) -100( odd multiples of 5) what is OA?

Imo it is 36. What is OA?

put 8 members to M we are left with 22 members put 12 members in S we are left with 10 members. Now if 5 members for R is chosen from 12 members of S, the 10 members left will not be part of any group. Hence 10 is the highest no of members .

Thanks to all of you for the answers. Hi abhishek, Could you pls let me know what would be the optimum search string to find this question? I have real difficulty finding mathematical questions. regards,

The sum of the even numbers between 1 and n is 79*80, where n is an odd number, then n=? Regards,

http://www.www.urch.com/forums/gmat-critical-reasoning/115878-sandactylus.html

Somehow, I do not buy GMAT2009's expl. whats wrong with A...... "different colors that mark" has no s-v discrepancy

OA is C

profound amount of biological diversity that is continuously .............now 'profound amount ' is plural or singular? also good old "Yet Another Hierarchically Official Oracle' search says : "Affect1 and effect, each both noun and verb, share the sense of “influence,” and because of their similarity in pronunciation are sometimes confused in writing. As a verb affect1 means “to act on” or “to move” (His words affected the crowd so deeply that many wept); affect2 means “to pretend” or “to assume” (new students affecting a nonchalance they didn't feel). The verb effect means “to bring about, accomplish”: Her administration effected radical changes. The noun effect means “result, consequence”: the serious effects of the oil spill. "

another vote for B

According to Interstudy, a nonprofit organization that studies health maintenance organizations (HMO’s), they estimate that, in comparison to last year, when only 36 percent of the nation’s 607 HMO’s was profitable, this year 73 percent will be. (A) they estimate that, in comparison to last year, when only 36 percent of the nation’s 607 HMO’s was profitable, this year 73 percent will be (B) compared to only 36 percent of the nation’s 607 HMO’s being profitable last year, they estimate 73 percent would be this year © only 36 percent of the nation’s 607 HMO’s were profitable last year; it estimates that this year 73 percent will be (D) it estimates 73 percent of the nation’s 607 HMO’s would be profitable this year; last year that was only 36 percent (E) only 36 percent of the nation’s 607 HMO’s last year were profitable, whereas they estimate it this year to be 73 percent

According to a survey of graduating medical students conducted by the Association of American Medical Colleges, minority graduates are nearly four times more likely than are other graduates in planning to practice in socioeconomically deprived areas. (A) minority graduates are nearly four times more likely than are other graduates in planning to practice (B) minority graduates are nearly four times more likely than other graduates who plan on practicing © minority graduates are nearly four times as likely as other graduates to plan on practicing (D) it is nearly four times more likely that minority graduates rather than other graduates will plan to practice (E) it is nearly four times as likely for minority graduates than other graduates to plan to practice

did not get the point. What is wrong with A. Can someone please explain?

is it 26 ? series (10,11..... 8 terms) ( 20 , 22..........4 terms) (100,121..........2 terms) 10000............1 terms and elements from second series are double of first series element of third series are square of first series element of fourth series is power 4 of first series.

3 has a cycle of 4 for unit digits i.e 3,9,7,1 2007%4 = 3 unit digit will be 7 -8 = -1 --> 10 -1 = 9 2 has a cycle of 2,4,8,6 2007%4 = 3 unit digit will be 8

if x is not equal to -y is x - y/ x + y >1? 1. x > 0 2. y x - y/ x + y >1 it can happen only if x-y>x+y ie. x is positive and y is negative and |x|>|y| combining both statements we get x>0 and y|Y| Hence E

it should be a. stmt 2 does not talk about powers of 5 and 7

stmt 1 : x^3(1-x^2) 2 cases . x^3 > 0 -- x>0 1-x^21 hence X>1 or x^3 1-x^2>0 ---1>x^2 ----- hence -1 stmt 2. 1-x^2 1 either x>0 and x>1 or x combining x>1 hence C

simplest way to understand stmt 2. y is an integer also y = |x| +x and y all the three conditions can be met only if y=0.

1...b 2...A what is OA?