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GMAT Data Sufficiency | Forum profile
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Forum profile page for GMAT Data Sufficiency on http://www.urch.com.
This report page is the aggregated overview from a single forum: GMAT Data Sufficiency , located on the Message Board at http://www.urch.com.
This forum profile page summarizes the general forum statistics such as: Users Activity, Forum Activity, and Top Authors, which are reported in either a table or graph below for a given reporting time period.
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2) Hot Threads for Last Week
Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a forum's popularity and/or exact posting volumes at any given reporting period.
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Posting activity on GMAT Data Sufficiency :
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3 Months
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Threads:
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67
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858
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Post:
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128
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2,167
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GMAT Data Sufficiency Posting activity graph:
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Top authors during last week:
user's latest post:
(x/y)^n
Published (2009-11-26 14:25:00)
If x, y and n are positive integers, is (x/y)^n greater than 1000? (1)x=y^3 and n>y. (2)x>5y and n>x.
user's latest post:
Gprep Question
Published (2009-11-26 17:37:00)
Quote: Originally Posted by Zealot Hi finisher, Thanks for your reply. You seem to have applied the slope equation mx+b however I still don't get most of the solution. Kindly elaborate yes i have used the slope forumla, since we know one of the point through which both the lines passes so use that point as x , y and also we know about C1 and C2 ( y intercept)..
user's latest post:
Is x^2 equal to xy? - Page 2 -...
Published (2009-11-25 21:06:00)
Quote: Originally Posted by mitzi Hi cristofer, Thank you for the alternative way! I am curious to know how x^2=xy can be written as x(x-y)=0 . Thank you for your generous help! I like you sense of humor.
user's latest post:
Gprep Question
Published (2009-11-28 14:22:00)
Got it thanks
user's latest post:
probability: male with brown hair
Published (2009-11-26 19:27:00)
Quote: Originally Posted by jonnysunn IMO E: 1) not suff 2) not suff 1-2) we have 20 males and 40 females we have 30 students with brown hair so for example we can have 20 males and all of them brown haired (prob would be 1/3), or 20 males non brown haired (30 females brown haired) and then prob would be 0 .... i´d choose E IMO C Probability doesn't deal with the exact numbers, it just deal with the probability of an event. In extreme...
user's latest post:
Ratio...
Published (2009-11-22 20:35:00)
1) says S/(S+B) went up.... this is possible: a.) if S goes up b.) if B goes down... So A is insufficient... 2) S+B went up.. again a.) if S stay same and B goes up... (in this is true...the S/(S+B) ratio decreases b.) is S and B both go up.then ratio increases B is insufficient Taking both together...b.) of 2 fits 1) and 2.) ...hence C as the ratio went up (according to 1) and that is possible only if S+B both change...thus S will have to go...
user's latest post:
Gprep-Remainder Theorem
Published (2009-11-23 13:25:00)
Quote: Originally Posted by abhasjha IMO- C this problem can be solved in multiple ways ......... n = 3k + 2; t = 5p + 3 .......(1) Statement 1 tells us that: (3k+2)-2 = an integer. (3k)/5. Thus, k must be a multiple of 5 5 Statement 2 tells us that: 5p+3 = an integer or (5/3)p +1 is an integer. Thus, p must be a multiple of 3 3 nt = 15kp + 9k + 10p + 6 ....... using (1) rewrite as, what is the remainder of: (15kp) + (3^2*k) + (2*5*p) + (6)...
user's latest post:
(x/y)^n
Published (2009-11-26 20:55:00)
my pick for B (1) obviously insufficient (2)if x,y and n integers >0 then the least value of y=1 then the least value for x=6 so as 6>5*1 and the least n=7 6^7>1000 sufficient
user's latest post:
probability: male with brown...
Published (2009-11-28 06:44:00)
Quote: Originally Posted by nverma Hi Fiver Can you please enlighten us, why do we need to find the exact number ? We just need to see the probability of events, which can vary from 0/60 to 10/60 in the given case. The way the question is put up, it demands an exact number predicting the possibility of the event in question. Btw the range we are talking about is from 0 to 20/60. If the question were to determine the MAX probability, then the...
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Latest active threads on GMAT Data Sufficiency ::
Started 8 hours, 19 minutes ago (2009-11-29 16:20:00)
by finsisher
Quote:
Originally Posted by GMAT9
154. Is x negative?
(1.) x3(1-x2)<0
(2.) x2-1<0
any easy way to solve.
stmt1 : either x^3<0
or 1-x^2<0
not sufficient
stmt x^2-1<0 or x^2<1 hence -1<x<1 not sufficient
combined x^3>0 hence x>0 so C
Started 1 day, 7 hours ago (2009-11-28 16:58:00)
by meiloya
Quote:
Originally Posted by marianha
x>y?
1) x^2>y^3
[ 2) x^3>y^4
No! Let's prove it by counter example and get a contradiction.
Assume x>y to be true.
Let's take -2>-4, where x=-2 and y=-4. When we plug this into the given hypothesis, what we will obtain must be true for each inequality.
...
Started 8 hours, 18 minutes ago (2009-11-29 16:21:00)
by finsisher
Quote:
Originally Posted by GMAT9
155. Marcia's bucket ca hold a maximum of how many liters of water?
(1) The bucket currently contains 9 liters of water
I think this information is not sufficient to give the answer
(2) if 3 liters of water are added to the bucket when it is half full of water,the amount of water in the ...
Started 10 months, 1 week ago (2009-01-25 10:05:00)
by hawk007
Started 1 week, 5 days ago (2009-11-17 18:53:00)
by socker121314
Started 3 days, 10 hours ago (2009-11-26 14:25:00)
by atishree
(x/y)^n
If x, y and n are positive integers, is (x/y)^n greater than 1000?
(1)x=y^3 and n>y.
(2)x>5y and n>x.
Started 3 days, 23 hours ago (2009-11-26 01:08:00)
by Zealot
Hi, as far as my knowledge goes probability of any event is >=0. In that case the answer should be C for this question however OA is E. Please suggest.
_ _ _ _ SIG _ _ _ _
JUST NEED 800!!!
Started 3 days, 21 hours ago (2009-11-26 03:13:00)
by Zealot
Gprep Question
Q. Lines n and p lie in the x-y plane. Is the slope of the line n less than the slope of line p?
1. lines n and p intersect at (5,1)
2. the y-intercept of line n is greater than y-intercept of line p
_ _ _ _ SIG _ _ _ _
JUST NEED 800!!!
Started 1 week, 1 day ago (2009-11-21 20:10:00)
by nverma
IMO the answer is 3.
Find values more than one SD below the mean.
SD=22.4
Mean=100
need to look for values which are greater than 77.6 and less than 100..
GUYS please comments...!!
Started 1 year, 3 months ago (2008-08-30 21:59:00)
by vanD
Quote:
Originally Posted by gmatguyIL
Agree with E. What is the OA ?
Nikshin, if line passes thru (1,p) and (p,13), it does not mean it passes thru (1,13). A line can pass thru any points that it wishes!
imo E not because we dont know what p is but because p can have more than 1 value.
(p,13) -> (0,1) ; ...
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Hot threads for last week on GMAT Data Sufficiency ::
Started 3 days, 21 hours ago (2009-11-26 03:13:00)
by Zealot
Gprep Question
Q. Lines n and p lie in the x-y plane. Is the slope of the line n less than the slope of line p?
1. lines n and p intersect at (5,1)
2. the y-intercept of line n is greater than y-intercept of line p
_ _ _ _ SIG _ _ _ _
JUST NEED 800!!!
Started 1 week, 1 day ago (2009-11-21 20:10:00)
by nverma
IMO the answer is 3.
Find values more than one SD below the mean.
SD=22.4
Mean=100
need to look for values which are greater than 77.6 and less than 100..
GUYS please comments...!!
Started 1 day, 7 hours ago (2009-11-28 16:58:00)
by meiloya
Quote:
Originally Posted by marianha
x>y?
1) x^2>y^3
[ 2) x^3>y^4
No! Let's prove it by counter example and get a contradiction.
Assume x>y to be true.
Let's take -2>-4, where x=-2 and y=-4. When we plug this into the given hypothesis, what we will obtain must be true for each inequality.
...
Started 3 days, 23 hours ago (2009-11-26 01:08:00)
by Zealot
Hi, as far as my knowledge goes probability of any event is >=0. In that case the answer should be C for this question however OA is E. Please suggest.
_ _ _ _ SIG _ _ _ _
JUST NEED 800!!!
Started 1 year, 3 months ago (2008-08-30 21:59:00)
by vanD
Quote:
Originally Posted by gmatguyIL
Agree with E. What is the OA ?
Nikshin, if line passes thru (1,p) and (p,13), it does not mean it passes thru (1,13). A line can pass thru any points that it wishes!
imo E not because we dont know what p is but because p can have more than 1 value.
(p,13) -> (0,1) ; ...
Started 1 week ago (2009-11-22 16:45:00)
by nverma
Started 1 week, 1 day ago (2009-11-21 19:32:00)
by nverma
Quote:
Originally Posted by edosts
If c1 and c2 are children and f1 and f2 are number of families in region 1 and region 2 respectively, ratio of children to family is greater for which of the two regions?
1) c1 > c2
2) f2 > f1
answer C
Expln:
c1, c2, f1, f2 cross multiply ok because all 4 will be positive nos
what if ...
Started 1 week, 2 days ago (2009-11-20 16:12:00)
by OneDayI'll
statement (1) : if all you know is that she bought 6 pencils, you of course have no idea how many of those 6 were of each type. this statement is therefore insufficient.
statement (2):
you have 21x + 23y = 130. because that's one equation in two variables, your first instinct is probably to say 'insufficient!!'
But using both we can determine.
23*2 21*4
46 ...
Started 4 months, 2 weeks ago (2009-07-16 05:46:00)
by Naruto
Quote:
Originally Posted by Cynosure77
If n = p/q, where p and q are nonzero integers, Is n an integer ?
(1) n^2 is an integer.
(2) (2n+4)/4 is an integer.
IMO E
Since square of n is an integer, therefore n could be squareroot of 3 etc
and 2n is an integer n could be 1.5,
both combined also ...
Started 1 week, 5 days ago (2009-11-17 17:59:00)
by finsisher
imo E
n*t =34,54 etc so rem could be 4,9 etc hence E
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