Search found 1560 matches
each pile will have at most two beans one each from yellow and green in order to maximize the red beans in any pile. so that way we have only 5 slots left
so max # of red beans will be 5
- by thephoenix
Tue Jul 05, 2011 7:53 am- Forum: Problem Solving
- Topic: Red Beans
- Replies: 4
- Views: 1639
a better way is to do by POE
eqn A^2/B
new eqn A^2/2B
in order to get original the numerator has to be inc so A,B,C eliminated
E 50% inc---->means 2.25*A^2/2B rounding of one digit gives us 2.3/2=1.15
D 40% inc----> means 1.96A^2/2B rounding of one digit gives us 2/2=1
hence d is closest
- by thephoenix
Sun Jun 19, 2011 10:27 am- Forum: Problem Solving
- Topic: Rate of change
- Replies: 5
- Views: 1734
my friend whatever u have heard is all wrong , these are very important topics if u are aiming for 650-700magicalhat wrote:how important are these topics for someone aiming for a 650 - 700? i've heard that they don't appear that much, but i really don't know... what has been the experience of the gmat experts?
- by thephoenix
Sat Jun 18, 2011 10:10 am- Forum: GMAT Math
- Topic: combinatorics and probability
- Replies: 2
- Views: 1853
the best way to solve these type is to use some value satisfying the conditions
here n can be 2,10,14,22....
now insert few value and u will get answer
like if n is 2 the the number will 8*10*12 (smallest possible number) and this number is div by 24,32 and 96
so st away go for E
- by thephoenix
Fri Jun 17, 2011 5:36 am- Forum: Problem Solving
- Topic: Divisibility revisited!!
- Replies: 5
- Views: 1556
- by thephoenix
Fri Jun 17, 2011 5:27 am- Forum: Problem Solving
- Topic: Standard Deviation?
- Replies: 3
- Views: 1178
- by thephoenix
Fri Jun 17, 2011 5:23 am- Forum: Problem Solving
- Topic: What is x in terms of y and z?
- Replies: 6
- Views: 1254
the easiest way is to solve in a laymen's method
for 1st person we have 3 choices so in 3 ways
for second we have 2
for last there is only one
tot ways 3*2*1=6
- by thephoenix
Thu Jun 16, 2011 7:39 pm- Forum: Problem Solving
- Topic: one more before going to bed...permutation?
- Replies: 3
- Views: 2384
C stands for combinationBens4vcobra wrote:Thanks all.
What does the "C2" mean? I've never seen this before...
P stands for permutation
nCr means n!/(r!*(n-r)!)
4C2=4!(2!*(4-2)!)=4!/(2!*2!)
similarly
npr n!/(n-r)!
- by thephoenix
Thu Jun 16, 2011 7:30 am- Forum: Problem Solving
- Topic: Combinatorics - How many combinations out of two groups?
- Replies: 6
- Views: 15515
IMO A (B) Europeans have long known quail eating is sometimes able to make ---> use of able to is wrong, moreover in GMAT, able to almost always wrong, generally CAN is used instead of ABLE TO (C) Eating quail has long been known to Europeans to sometimes make --->Eating quail SINGULAR make PLURAL ...
- by thephoenix
Mon Mar 28, 2011 8:49 am- Forum: Sentence Correction
- Topic: Europeans have long known that eating
- Replies: 20
- Views: 6433
in this s/c the verb makes agrees to the subject eating( a gerund) a gerund will always have singular verbHSPA wrote:Hello phonix,
is the verb " makes " going on to which subject eater or Europeons??
- by thephoenix
Mon Mar 28, 2011 8:46 am- Forum: Sentence Correction
- Topic: Europeans have long known that eating
- Replies: 20
- Views: 6433
Europeans have long known that eating quail sometimes makes the eater ill, but only recently has it been established that the illness is caused by a toxin present in the quail’s body only under certain conditions. (A) Europeans have long known that eating quail sometimes makes (B) Europeans have ...
- by thephoenix
Mon Mar 28, 2011 8:19 am- Forum: Sentence Correction
- Topic: Europeans have long known that eating
- Replies: 20
- Views: 6433
when struck b/n two correct idioms go for shorter one
c) its wordier to say unable to be distinguished, indistinguishable is better
a) correct idiom so(adj) as ...
- by thephoenix
Fri Oct 22, 2010 7:58 am- Forum: Sentence Correction
- Topic: so as to be and so that 1000 SC
- Replies: 4
- Views: 1366
@ gmat_perfect
E violates the idiom if ..then construction
if(past)......then(wud or wud have) is correct idiom
but any way thanks for highlightening the diff
- by thephoenix
Sun Oct 17, 2010 1:19 am- Forum: Sentence Correction
- Topic: If Vs When
- Replies: 8
- Views: 5215
IMO D
the stimulus is trying to make a connection b/n lead deposits in soil and elevated lead levels in children
option D confirms that when children exposed to soil have that effect otherwise no effect
- by thephoenix
Sun Oct 10, 2010 6:26 pm- Forum: Critical Reasoning
- Topic: CR
- Replies: 4
- Views: 3717
- by thephoenix
Sun Oct 10, 2010 7:12 am- Forum: Problem Solving
- Topic: Geometry: Dont take it for granted
- Replies: 9
- Views: 1745