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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.
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 ...
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...
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...
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...
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...
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...
sd at the beginning of expt = 10
we nned to find sd at the end of the expt.
30% water has been removed from each tank, so new sd now is 0.30(old sd) = 0.30*10 = 3...suff
Does not tell us anything about the variation...insuff
answer is A
given: a and b are both divisible by 6
because of this "+2" it is insuff to conclude that b is the gcd of (a,b)
suff because b will be the gcd of (3b,b) i.e., (a,b)
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. ...
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....