Search found 27 matches
I thought the problem is pretty easy till I tried understanding the division by 3! part. I don't see where I have considered ordering in the equation when I say - 52*51C17*34C17*1. Will appreciate if you can you please explain in a little more detail? Also, I notice that I can choose the set of 1 ca...
- by anirban_lax
Tue Aug 10, 2010 8:27 am- Forum: Problem Solving
- Topic: permutation and combinations
- Replies: 11
- Views: 1681
GMATPrep Test 1 - Surds problem
Hi, I encountered this surds related problem while writing the Test 1 of GMATPrep. During the test I got the answer by process of elimination but I'm sure there is a better and more accurate way of solving this. Here is the problem: If M = (4^1/2) + (4^1/3) + (4^1/4) then the value of M is a) less t...
- by anirban_lax
Tue Aug 10, 2010 8:13 am- Forum: Problem Solving
- Topic: GMATPrep Test 1 - Surds problem
- Replies: 5
- Views: 2623
To understand how the sequence can be simplified you can just write out the various terms of the sequence putting in various values for n. s1 = 1/1 - 1/2 s2 = 1/2 - 1/3 s3 = 1/3 - 1/4 s4 = 1/4 - 1/5 ... ... s(k-1)th term = 1/(k-1) - 1/k sk = 1/k - 1/(k+1) Now, if we add them up then we can see that ...
- by anirban_lax
Mon Aug 02, 2010 2:23 pm- Forum: Problem Solving
- Topic: Quantative Review 2nd Edition, Problem Solving #133
- Replies: 6
- Views: 1464
Does anyone have Probability problem sets?
Hi Everyone, Hope all of you are having good fun with all the quanti problems around. I am. It's good to solve quite a few problems everyday when in real life problems keep on pouring and most remain unsolved for days! Back to business - I am trying to understand the dreaded probability and combinat...
- by anirban_lax
Tue Jul 27, 2010 8:26 am- Forum: Problem Solving
- Topic: Does anyone have Probability problem sets?
- Replies: 1
- Views: 998
Rahul and Suman,
Thanks a lot.
Rahul's explanation is crystal clear. Love the way he used equations to solve this!
I appreciate the amazing turn around time in replying to the question. You guys are amazing!
Thanks again!
Anirban
- by anirban_lax
Mon Jul 19, 2010 9:29 pm- Forum: Problem Solving
- Topic: Geometry Question - GMATPrep PT2
- Replies: 3
- Views: 1098
Geometry Question - GMATPrep PT2
There are 2 triangles with their corresponding angles equal. The base of the smaller triangle is s while that of the bigger triangle is S. If the area of the bigger triangle is twice that of the smaller one then express S in terms of s. a) {(2^1/2)/2}s b) {(3^1/2)/2}s c) (2^1/2)s d) 2s OA: C I got t...
- by anirban_lax
Mon Jul 19, 2010 7:56 pm- Forum: Problem Solving
- Topic: Geometry Question - GMATPrep PT2
- Replies: 3
- Views: 1098
. But, we can express this equation also as -x < 1/x which makes it x2 > 1. -> This will make |x| > 1. This is the point where error crept in. If -x < 1/x then - x2 > 1 (multiplying both sides by the negative number x) x2 < -1 (multiplying both sides by -1) This would mean x2 is a negative number a...
- by anirban_lax
Fri Jul 16, 2010 12:25 pm- Forum: Data Sufficiency
- Topic: Is |x| < 1?
- Replies: 8
- Views: 1763
(1) from 1 st we are given that N is square of the integer, as only square of the integer has odd number of factors so remainder can be 0 or 1 1=2*0+1 4=2*2+0 9=2*4+1.... I think the inference you are using is not correct. N cannot surely be concluded as a square number just because it has odd numb...
- by anirban_lax
Fri Jul 16, 2010 12:00 pm- Forum: Data Sufficiency
- Topic: DS-Prob 1
- Replies: 10
- Views: 1346
Thank you much!
Do you happen to remember any online material on perm 'n comb and probability? Something to help me remember ways of solving the different types of cases in these topics.
Regards
Anirban
- by anirban_lax
Sat Jun 19, 2010 5:27 am- Forum: GMAT Math
- Topic: Quantitative Syllabus
- Replies: 3
- Views: 4928
Quantitative Syllabus
Hi All, I'm new to this forum and still not very acquainted with the sitemap. So, if the question below is already answered elsewhere please bear with me. I'm planning to take the GMAT later this year and have decided to go for self study mode. I'm looking for a comprehensive list of the different t...
- by anirban_lax
Fri Jun 18, 2010 1:57 pm- Forum: GMAT Math
- Topic: Quantitative Syllabus
- Replies: 3
- Views: 4928
Hi Dana! Awesome and Fantabulous score! A whooooping 770! Also, I must mention you have a flare for connecting to people with your words. Kudos...yet again! I was reading through your analysis of the quality of maths taught in Romania. Good to know that you think so highly of your education system a...
- by anirban_lax
Tue Jun 15, 2010 1:00 pm- Forum: I just Beat The GMAT!
- Topic: Dana's tale
- Replies: 73
- Views: 72991
Is it wise to dump GMAT and go for tier 2 in UK?
Hi It seems that some good B-schools in UK do not need GMAT as a mandatory entry requirement (eg. Strathclyde University). For some people like me, a top tier US or UK school is out of reach due to funding issues. Keeping this population in mind would you advise students with 5+ years of full time w...
- by anirban_lax
Tue Nov 10, 2009 2:42 pm- Forum: Ask Stacy Blackman
- Topic: Is it wise to dump GMAT and go for tier 2 in UK?
- Replies: 1
- Views: 1744