Search found 68 matches
Given .....Bio | !Bio --------------------------- B | ?? | ?? | 18 --------------------------- G | ?? | ?? | ?? ---------------------------- ... | 26 | ?? | ?? = "TOTAL" Need to figure out what "TOTAL" equals. Note that TOTAL = 26 + !Bio or TOTAL = 18 + GIRLS so, if you can figu...
- by zacharyz
Wed Jun 04, 2008 8:49 pm- Forum: Data Sufficiency
- Topic: GMAT paper test Q
- Replies: 2
- Views: 3581
is the second sweater 25% off or does the sweater cost 25% Depending The answer could be 140 I agree. It sounds like the sweater is 25% (of the original cost). In this case, $140 is the right answer: original shirt: x discounted shirt: .25 x Therefore $175 = x(1+.25) => x = $140 One of them is a tr...
- by zacharyz
Wed Jun 04, 2008 6:13 am- Forum: Problem Solving
- Topic: GMAT PS
- Replies: 5
- Views: 2547
How did you know to multiply by the combination in this case? What wording gave you that, beyond the 1/(2^5) calculation...
- by zacharyz
Wed Jun 04, 2008 1:32 am- Forum: Problem Solving
- Topic: PROBABILITY question
- Replies: 7
- Views: 1732
Well, netigen is answering the question that I think you were asking. However, the actual question asked was if n is an integer, is n^2 an integer. The answer to that is YES. n^2 means that you are multiplying n * n. Since n is an integer, n^2 is always an integer. Look at any examples you want, but...
- by zacharyz
Tue Jun 03, 2008 6:33 pm- Forum: Data Sufficiency
- Topic: If n^2 is interger is n an interger
- Replies: 3
- Views: 1457
Viper - first, can you please actually retype the questions. Makes it easier for people to find these, as well as respond when looking in this form. Pictures don't always show up. For this problem: The manual approach ---------------- Look at the combinations: (x-y)(x+y) = x^2 - y^2 (x-y)(x+5y) = x^...
- by zacharyz
Tue Jun 03, 2008 10:45 am- Forum: Problem Solving
- Topic: gmat prep equations + probability
- Replies: 2
- Views: 1642
Given: f(n) is the number of integers that: 1) is less than n 2) has no factors in common with n Question: f(p) where p is a prime number. If p is an even number, then half the numbers less than it would share a common factor (namely the number 2). However, the question is asking for prime numbers. ...
- by zacharyz
Tue Jun 03, 2008 10:31 am- Forum: Problem Solving
- Topic: gmat prep f(n)
- Replies: 1
- Views: 1240
GMATPrep2 - Combinations
From a group of 21 astronauts that includes 12 people with previous experience in space flight, a 3-person crew is to be selected so that exactly 1 person in the crew has previous experience in space flight. How many different crews of thsi type are possible? a) 432 b) 594 c) 864 d) 1330 e) 7980 OA ...
- by zacharyz
Tue Jun 03, 2008 9:47 am- Forum: Problem Solving
- Topic: GMATPrep2 - Combinations
- Replies: 1
- Views: 1406
From (2), you know that S contains at least {2}. There is no other guarantee that anything else is in the set... but let's look at the rules: i) says that if a is in the set, then -a is in the set. Now you know that -2 is also in the set. ii) says that if a and b are in the set, then a*b are in the ...
- by zacharyz
Tue Jun 03, 2008 7:17 am- Forum: Data Sufficiency
- Topic: Is -4 in S? from DS 1000 series
- Replies: 6
- Views: 1770
For Statement 1: 2/3 = x(x+3) / (xy+3y) So let's look at just the denominator: xy + 3y Factor y out of this to be: y*(x+3) Now, you should be able to see that the numerator is: x*(x+3) and the denominator is: y*(x+3) The (x+3) cancels out, so the right part of that equation is simply: x/y Now, you ...
- by zacharyz
Tue Jun 03, 2008 5:17 am- Forum: Data Sufficiency
- Topic: Equations
- Replies: 4
- Views: 1571
Thanks, guys. Trying to keep my nerves while staying real. I like your suggestion, Tatiana. Going to try to keep my expectations real on the quant by really challenging myself.
Good luck, Saber - I hope to hear good news from you first!
- by zacharyz
Tue Jun 03, 2008 4:18 am- Forum: GMAT Strategy
- Topic: Ready for the GMAT
- Replies: 8
- Views: 2683
Clock on the GMAT
Someone who has taken the real test before - Does the clock on the exam count completely from minutes (75, 74, etc..) or does it show 1:15, 1:14.. 0:59, etc... I thought one of my tests at least showed the hour format, and I need have milestone times written down on my sheet that I like to cross out...
- by zacharyz
Sun Jun 01, 2008 3:23 pm- Forum: GMAT Strategy
- Topic: Clock on the GMAT
- Replies: 2
- Views: 1393
Ready for the GMAT
I am looking at T-6 days before deadline now. While I lost about 3 weeks of studying recently due to work, business trips, a cold, and general mayhem at home, I am going ahead with my planned test date of June 7th at 8:00AM. (this decision was only partially related to the fact that there are no res...
- by zacharyz
Sun Jun 01, 2008 2:35 pm- Forum: GMAT Strategy
- Topic: Ready for the GMAT
- Replies: 8
- Views: 2683
- by zacharyz
Fri May 30, 2008 4:15 pm- Forum: Problem Solving
- Topic: Addition table - GMAT prep question
- Replies: 3
- Views: 2361
- by zacharyz
Fri May 30, 2008 4:04 pm- Forum: Problem Solving
- Topic: 2 min question again :)
- Replies: 20
- Views: 4634
sporty - one request. can you use the spoiler when you post the answer: example: OA A when writing the post, highlight the solution part and click "Spoiler"... it will start/end with brackets and 'spoiler' That will make the game a little sportier for those of us solving this too. Thanks!
- by zacharyz
Fri May 30, 2008 10:42 am- Forum: Problem Solving
- Topic: question from ets paper
- Replies: 3
- Views: 1389