Search found 13 matches
simple annoying problem
If y(u - c) = 0 and j(u - k) = 0, which of the following must be true, assuming c < k?
Can someone please help explain how we get this answer?
yj <0> 0
yj = 0
j = 0
y = 0
- by dzelkas
Thu Jun 05, 2008 5:20 pm- Forum: Problem Solving
- Topic: simple annoying problem
- Replies: 10
- Views: 2257
difficult problem?
I can't seem to figure out the below problem. Can someone please help the correct answer should be 25% Foodmart customers regularly buy at least one of the following products: milk, chicken, or apples. 60% of shoppers buy milk, 50% buy chicken, and 35% buy apples. If 10% of the customers buy all 3 p...
- by dzelkas
Sun May 25, 2008 2:44 pm- Forum: Problem Solving
- Topic: difficult problem?
- Replies: 5
- Views: 1715
Permutation/Combination Problem
There are four distinct pairs of brothers and sisters. In how many ways can a committee of 3 be formed and NOT have siblings in it?
a) 8
b) 24
c) 32
d) 56
e) 80
correct answer is C. Can someone please help explain the solution?
- by dzelkas
Sun May 25, 2008 11:47 am- Forum: Problem Solving
- Topic: Permutation/Combination Problem
- Replies: 4
- Views: 1660
math question
Can someone pls help me understand this X and Y are consecutive positive integers and: x>0 X^2-1>y^2-4y+x-1 a) y = or > than 0 b) y > 0 c) y > 1 d) y > 7 e) y > 8 Which of the following represents all the possible values of y? correct answer is B) It explains as follows by factoring out x^2-1>y^2-4y...
- by dzelkas
Sun May 25, 2008 11:46 am- Forum: Problem Solving
- Topic: math question
- Replies: 2
- Views: 1202
Study Buddy!
I am looking for a study buddy, to meet up 2-4 times a week.. I guess it would be more of a motivational tool. I have been scorring in 600+ range and looking to go to 700++++ I am in New York. Can meet at library/barnes& nobles/starbucs.. Doesn't matter.. I know I need to put more time into stud...
- by dzelkas
Sun Feb 10, 2008 5:53 pm- Forum: GMAT Strategy
- Topic: Study Buddy!
- Replies: 2
- Views: 1415
silly inequality question :)
Is t a non integer? (1) |t-3|<1 (2) t(does not not = )3 I understand that it's not (2) but I am confused on (1) only because this is the solution: |t-3|<1 -1<t<-3 can someone explain this concept to me 2<t<4 and then this part, where i got lost as well. shouldnt it be |t-3|<1 t<4??? any help appreci...
- by dzelkas
Fri Sep 21, 2007 6:58 pm- Forum: Problem Solving
- Topic: silly inequality question :)
- Replies: 3
- Views: 1468
confusing geometry problem. someone help me with the steps
Can someone help me figure this out? I got confused on couple of steps.. x=(yz)/x+1/y we are asked to find Z here is the solution where i got confused x-1/y=yz/x x^2-x/y^2=z ( i got lost here. it looks like we multiplied by x to get rid of denominator but where did we get y^2 from? x^2 y/y^2 - x/y^2...
- by dzelkas
Fri Sep 21, 2007 1:50 pm- Forum: Problem Solving
- Topic: confusing geometry problem. someone help me with the steps
- Replies: 3
- Views: 1966
Permutation License plate problem
Can someone help me explain the answer in this problem? A license plate consists of a combination of 6digits or letters. All numbers (0-9) and all 26 letters may be used. How many Unique license plates are there? a) 36^6 b) 36!/30!6! c)36!/30! d)36!/6! e)30! Correct answer is A) I am confused becaus...
- by dzelkas
Sun Sep 16, 2007 7:12 pm- Forum: Problem Solving
- Topic: Permutation License plate problem
- Replies: 5
- Views: 16456
thanks! its crazy, I knew the rule to do it in the (ii) but didn't even think about it in the first part..
- by dzelkas
Sun Aug 26, 2007 10:09 am- Forum: Data Sufficiency
- Topic: Is X>Y DS question
- Replies: 5
- Views: 3271
still no go
The response they say is that in (1) x and y could be either positive or negative.. still don't get it
anyone can help out on this one?
- by dzelkas
Sun Aug 26, 2007 9:19 am- Forum: Data Sufficiency
- Topic: Is X>Y DS question
- Replies: 5
- Views: 3271
Is X>Y DS question
I am confused about this question Is X>Y? (i) x/(3y)>1/3 (ii) -x+p<-y+p the answer is (b) where (ii) alone is sufficient I understand (ii) where we get x>y but in (i) don't we also get x>y? if it is: x/(3y)>1/3 if we multiplu both sides by 3Y don't we get the answer x>y? I think I am just making sil...
- by dzelkas
Sat Aug 25, 2007 7:29 pm- Forum: Data Sufficiency
- Topic: Is X>Y DS question
- Replies: 5
- Views: 3271
f(a+b)=f(a)+f(b)
can someone help me explain how to solve this problem?
For which of the following functions is f(a+b)=f(a)+f(b) for al positive numbers a and b?
a) f(x)=x^2
b) f(x)=x+1
c) f(x)= sq root of x
d) f(x)=2/3
e) f(x)=-3x
- by dzelkas
Wed Jul 04, 2007 2:30 pm- Forum: Problem Solving
- Topic: f(a+b)=f(a)+f(b)
- Replies: 4
- Views: 25995
Kaplan vs. Manhattan GMAT vs. Princeton Review vs GMAX
Hi everyone, This is my first post here. I am planning on taking my GMAT early in September. I was wondering if anyone can help me decide which tutoring course I should take? Kaplan vs. Manhattan GMAT vs. Princeton Review vs GMAX I have been scoring in the 550s.. and my goal is to move to 700. I kno...
- by dzelkas
Thu Jun 21, 2007 8:04 pm- Forum: GMAT Strategy
- Topic: Kaplan vs. Manhattan GMAT vs. Princeton Review vs GMAX
- Replies: 1
- Views: 7830