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