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Several ways of solving:

1. Lines OP and OQ are perpendicular, so product of their slopes will be -1.
slope of OP*slope of OP=-1

slope of OP = -(1/root3)
=>Slope of OQ = root3 = t/s. So s = 1

2.Can also use the 30-60-90 traingles method to see that s is 1.

by muzali

Fri Dec 26, 2008 9:22 am
Forum: Problem Solving
Topic: GMAT- PREP x-coordinate of the point on circle
Replies: 3
Views: 733

I have used 800 score. It is not bad and is decent for practice, but it is a CTB (computer-based test) rather than a CAT. In my opinion, the best CAT out there is the GMATPrep software. Do this software as many times as you can. A lot of questions will be repeated, but you'll certainly see some new ...

by muzali

Fri Dec 26, 2008 8:42 am
Forum: I just Beat The GMAT!
Topic: the best adaptive test to do before doing the real test
Replies: 2
Views: 1323

Cheeseburst, Go for any Rocky movie, they are all inspiring. I like I, II, IV more than the rest. As I mentioned earlier, try to solve as many quant problems (posted daily on the forum) as you can. If you are weak at any particular topic, use the search functionality to look it up on the forum. The ...

by muzali

Thu Dec 25, 2008 9:58 pm
Forum: I just Beat The GMAT!
Topic: 710 (92%): Q49(88%)V38(83%)
Replies: 16
Views: 4799

You have nailed it dude. Best wishes for the application process.

by muzali

Thu Dec 25, 2008 3:25 pm
Forum: I just Beat The GMAT!
Topic: Beat it! 750!!
Replies: 7
Views: 2585

As promised earlier, I am posting part III, my test day experience Part III I took my test on December 20, 2009 in Oregon. The night before, I had about 5-6 mixed alcoholic drinks, ate pizza and watched Rocky on dvd. I was so nervous that getting drunk was the only way I could go to sleep. In retros...

by muzali

Wed Dec 24, 2008 10:23 am
Forum: I just Beat The GMAT!
Topic: 710 (92%): Q49(88%)V38(83%)
Replies: 16
Views: 4799

Re: Part II

Many Congrats muzali.....Nice score.. And a very insightful post... My exam is 1 month away and I am also from a non maths background.......And I want to improve my quant score which is around 40-43 now.....Can I take to 49 in 30 days time??Is it achievable in a month's time? Pls suggest me wht all...

by muzali

Mon Dec 22, 2008 11:07 am
Forum: I just Beat The GMAT!
Topic: 710 (92%): Q49(88%)V38(83%)
Replies: 16
Views: 4799

Awesome! Congratulations, and good luck with the applications process.

by muzali

Mon Dec 22, 2008 10:56 am
Forum: I just Beat The GMAT!
Topic: Scored 720 on the GMAT
Replies: 3
Views: 1904

Part II

Thank you all for your good wishes. Part II First month a.k.a. getting to know the exam I am not from a math-based background, and English is not my native language - a situation that needed to be properly addressed considering that succeeding on the GMAT is largely dependent on one's mathematical a...

by muzali

Sun Dec 21, 2008 1:41 pm
Forum: I just Beat The GMAT!
Topic: 710 (92%): Q49(88%)V38(83%)
Replies: 16
Views: 4799

710 (92%): Q49(88%)V38(83%)

All, I got back from the test center a couple of hours ago and this is the story of my GMAT prep... Part I Background info et al I am a 29 years old Indian guy from a non-engineering background. I had initially thought about taking the GMAT in September of 2007. However, a quick look at the material...

by muzali

Sat Dec 20, 2008 6:27 pm
Forum: I just Beat The GMAT!
Topic: 710 (92%): Q49(88%)V38(83%)
Replies: 16
Views: 4799

I should have added this info before, but some general rules for std dev (sd) are: 1. sd (x+c) = sd(x) where c is a const 2. sd (xc) = c*sd(x) To illustrate 1., 6 water tanks have different water levels with sd =10 units at the beginning of the expt. 50 units was added to each of the 6 tanks., new s...

by muzali

Thu Dec 18, 2008 9:47 pm
Forum: Data Sufficiency
Topic: GMAT prep test
Replies: 4
Views: 1181

sd at the beginning of expt = 10

we nned to find sd at the end of the expt.

Stm1
30% water has been removed from each tank, so new sd now is 0.30(old sd) = 0.30*10 = 3...suff

stm2
Does not tell us anything about the variation...insuff

answer is A

by muzali

Thu Dec 18, 2008 9:41 pm
Forum: Data Sufficiency
Topic: GMAT prep test
Replies: 4
Views: 1181

given: a and b are both divisible by 6

Stm1: a=3b+6
or (a/3)=b+2
because of this "+2" it is insuff to conclude that b is the gcd of (a,b)

Stm2: a=3b
suff because b will be the gcd of (3b,b) i.e., (a,b)

ans:B

by muzali

Thu Dec 18, 2008 12:08 pm
Forum: Data Sufficiency
Topic: Greater common divisior
Replies: 3
Views: 862

A) any prime number has two positive factors - so insuff B) for any prime number except 2, the difference between the two factors will always be even. Let us consider some non-prime numbers: 4; factors are: 1,2,4 -the given condition in B is false for 4-2 (even) 9; factors are; 1,3,9 - again false. ...

by muzali

Thu Dec 18, 2008 12:01 pm
Forum: Data Sufficiency
Topic: equal to 2
Replies: 6
Views: 1148

I think Logitech is bang on...
"is ab=1" and "what is x" are indeed different question. Thanks for pointing this out.

by muzali

Wed Dec 17, 2008 8:53 am
Forum: Data Sufficiency
Topic: Gmat Plus 2
Replies: 12
Views: 1609

Re: Gmat Plus 2

Q. Is ab = 1 ? (1) aba = a (2) bab = b OA is E . Can someone explain? Regards MSD This is a YES / NO question. Is ab=1 ? YES IT IS - Sufficient , NO IT IS NOT = sufficient MAYBE = INSUF St1 and St2 both have two solutions St1+St2 a=0 & b =0 or AB=1 a=1/b well... ab can be 0 or ab=1 We are not sure....

by muzali

Wed Dec 17, 2008 12:36 am
Forum: Data Sufficiency
Topic: Gmat Plus 2
Replies: 12
Views: 1609