Search found 788 matches
Re: OG 234
147000 can be broken down into 7 * 7 * 5 * 5 * 5 * 3 * 2 * 2 * 2
(please note that there are no other combinations possible
with 7, 5, 3 and 2)
Given that red = 7 points, there must be 2 red beads
- by jayhawk2001
Sat Dec 08, 2007 9:33 am- Forum: Problem Solving
- Topic: OG 234
- Replies: 5
- Views: 2014
Please post the source and the answer choices.
I'd go for 10 i.e. 4C3 + 3C1 + 3C1
where 4C3 is the number of ways of getting a 3 flower garland
from 4 different colors. 3C1 accounts for the extra blue and red
- by jayhawk2001
Sat Dec 08, 2007 9:26 am- Forum: Problem Solving
- Topic: combinatorics
- Replies: 10
- Views: 2939
Welcome to beatthegmat forums, Abhinav
There are plenty of resources available for the quants section.
A good starting point will be the resources page below
http://www.beatthegmat.com/resources.html
- by jayhawk2001
Sat Dec 08, 2007 9:15 am- Forum: Problem Solving
- Topic: Reference Material for Quanta
- Replies: 1
- Views: 1515
Re: DS
(1) x-y+1<0
(2) x-y-1<0
1 - sufficient. x + 1 < y. So, x < y.
2 - insufficient. x < y+1. It could be that x = y.
Hence A
- by jayhawk2001
Mon Dec 03, 2007 5:26 pm- Forum: Data Sufficiency
- Topic: DS
- Replies: 1
- Views: 1593
We are given x + y = 77
1 - sufficient. y + 1 + y = 77. We can solve for y and hence x. We can
get xy
2 - sufficient. Only 2 possibilities are 37 + 38 and 38 + 37. Either way
we have the same product for xy.
Hence D
- by jayhawk2001
Mon Dec 03, 2007 5:22 pm- Forum: Data Sufficiency
- Topic: GMAT PREP ??
- Replies: 1
- Views: 1515
Re: S/C question
You cannot have "both" and "as well as". So, A and D are out
In C, the clause after the ":" cannot begin with these
In E, "includes" is incorrect
- by jayhawk2001
Mon Dec 03, 2007 4:26 pm- Forum: Sentence Correction
- Topic: S/C question
- Replies: 6
- Views: 5975
For question 30 --
Let there be 'n' chairs in each row. We have n * (n-1) chairs in all
1 - sufficient. n * (n-1) = 72. n has to be integer, so we can solve for n
2 - sufficient. n + n-1 = 17. Again we can solve for n
Hence D
- by jayhawk2001
Thu Nov 22, 2007 8:35 am- Forum: Data Sufficiency
- Topic: gmat prep problems
- Replies: 18
- Views: 5727
For question 28 --
If total budget = x, dollars in radio budget = 7 / 20 * x
1 - sufficient. we have 8/20*x = 18750 + 3/20*x. We can solve
for x
2 - sufficient. same as 1
Hence D
- by jayhawk2001
Thu Nov 22, 2007 8:32 am- Forum: Data Sufficiency
- Topic: gmat prep problems
- Replies: 18
- Views: 5727
For question 19 --
1 - insufficient. We just know a+b=-1. We need to find a and b since
these are the 2 points at which the graph cuts the x-axis
2 - insufficient. We just know ab=-6 (substitute for x, y in eqn)
Together we can find a and b and hence is sufficient.
Answer is C.
- by jayhawk2001
Thu Nov 22, 2007 8:27 am- Forum: Data Sufficiency
- Topic: gmat prep problems
- Replies: 18
- Views: 5727
For question 36 -- Let target for Jan = I. We need to know I and x to solve (I + 2x) for march 1 - insufficient. Target Dec = I + 11x = 310000. We don't know I and x 2 - insufficient. I + 8x = 30000 + I + 5x. We can find x but we still don't know I Combining, we have 2 equations with 2 variables. He...
- by jayhawk2001
Thu Nov 22, 2007 8:24 am- Forum: Data Sufficiency
- Topic: gmat prep problems
- Replies: 18
- Views: 5727
Hi, please post 1 or 2 questions in each post. This will encourage discussion amongst the members. For question 7, 1 - sufficient. Angle BAD = Angle ABD = x (since exterior angle = 2x). So, ABD is isosceles with AD = BD. We also know BD = BC since triangle BDC is isosceles. 2 - insufficient. We have...
- by jayhawk2001
Thu Nov 22, 2007 8:17 am- Forum: Data Sufficiency
- Topic: gmat prep problems
- Replies: 18
- Views: 5727
I have no idea about the last one ..the one with the slopes..maybe someone cud throw some light :?: eqn of line t : y = m1*x + c1 eqn of line k : y = m2*x + c2 1 - insufficient. product of x intercepts = (-c1/m1) * (-c2/m2) = c1c2 / m1m2 = +ve. We don't know if m1m2 is +ve or -ve 2 - insufficient. ...
- by jayhawk2001
Thu Nov 22, 2007 8:05 am- Forum: Data Sufficiency
- Topic: DS-Questions from Gmat Prep
- Replies: 7
- Views: 1978
Re: range of set
The range of set A is R. A number having a value equal to R, is added to set A. Will the range of set A increase? (1) All numbers in the set are positive (2) The mean of the new set is smaller than R interesting q for practice Is it C? 1 - insufficient. Take {100, 101}, range increases Take {1,2,3}...
- by jayhawk2001
Sat Nov 17, 2007 1:42 pm- Forum: Data Sufficiency
- Topic: range of set
- Replies: 1
- Views: 1335
Re: Mgmat Ds
Is it B?ri2007 wrote:If x is a positive integer, is x – 1 a factor of 104?
(1) x is divisible by 3.
(2) 27 is divisible by x.
1 - insufficient.
Take x = 3; 2 is a factor of 104.
Take x = 6; 5 is not a factor of 104.
2 - sufficient. Only values of x are 3 and 9.
2 and 8 are factors of 104
- by jayhawk2001
Sat Nov 17, 2007 1:23 pm- Forum: Data Sufficiency
- Topic: Mgmat Ds
- Replies: 3
- Views: 1594
Re: GMATPrep DS
maverick2007 wrote:Is xy>0?
1) x-y>-2
2) x-2y<6> -2
2y-x > 6
Adding, you get y > 4. Using this in (1), we get x > 2. So, xy > 0
I'm inclined towards C
- by jayhawk2001
Wed Nov 14, 2007 6:37 pm- Forum: Data Sufficiency
- Topic: GMATPrep DS
- Replies: 3
- Views: 1865