## Search found 1060 matches

- by neelgandham

Sat Sep 22, 2012 1:38 am- Forum: GMAT Strategy
- Topic: Ron Purewal videos index
- Replies:
**7** - Views:
**25816**

- by neelgandham

Sat Sep 22, 2012 1:20 am- Forum: Problem Solving
- Topic: Practise Test Problem
- Replies:
**4** - Views:
**1184**

- by neelgandham

Thu Sep 20, 2012 1:22 am- Forum: I just Beat The GMAT!
- Topic: 610 (diagnostic) to 760 (47Q/73%, 49V/99%, 99% overall)
- Replies:
**7** - Views:
**6580**

Find the number of cubes required to erect a pillar of volume 20 m3? I. The edge of the cube is 0.5 m. Case 1: Let the base of the pillar be made with one such cube. Volume of the pillar = Area of base * Height = 0.5*0.5*0.5*hn = 20 n = 20*8 = 160. Case 2: Let the base of the pillar be made with two...

- by neelgandham

Wed Sep 19, 2012 3:29 am- Forum: Data Sufficiency
- Topic: DS - 1
- Replies:
**3** - Views:
**1015**

See if these help: http://www.beatthegmat.com/mba/2010/12/09/mixture-problems-on-the-gmat http://www.beatthegmat.com/mixture-problem-pita-works-not-pluggin-in-t117281.html http://www.beatthegmat.com/concept-of-mixture-problem-t111809.html http://www.beatthegmat.com/hard-solutions-mixture-problem-t69...

- by neelgandham

Tue Sep 18, 2012 1:00 pm- Forum: Problem Solving
- Topic: Mixture problems: I'm really struggling, any good frameworks
- Replies:
**1** - Views:
**1230**

In a game, three groups of students (A, B and C) in a class have averaged scores of -4, 0.5 and 20 respectively. The class average is 2. Group A and B account for what proportion of the entire student population? Let the number of people in groups A,B,C be A,B,C. So, -4*A + 0.5*B + 20*C = 2*A + 2*B ...

- by neelgandham

Tue Sep 18, 2012 9:02 am- Forum: Problem Solving
- Topic: Proportions- averages
- Replies:
**3** - Views:
**948**

- by neelgandham

Tue Sep 18, 2012 6:27 am- Forum: Announcements
- Topic: Please Vote for Beat The GMAT!
- Replies:
**4** - Views:
**2751**

- by neelgandham

Tue Sep 18, 2012 1:28 am- Forum: Data Sufficiency
- Topic: X&Y
- Replies:
**4** - Views:
**1013**

- by neelgandham

Mon Sep 17, 2012 7:05 am- Forum: Problem Solving
- Topic: Manhattan Challenge Problem
- Replies:
**23** - Views:
**7860**

Is x^4 + y^4 > z^4? A x^2 + y^2.> z^2 Case 1: If x = 100, y = 100 and z = 0. Then x^2 + y^2.> z^2 (2*100^2 > 0) and x^4 + y^4 > z^4 (2*100^4 > 0). Case 2: If x = 4, y = 4 and z = 5 x^2 + y^2.> z^2 (32 > 25) and x^4 + y^4 < z^4 (512 < 625). Since we don't have a definite answer, Statement I is insuff...

- by neelgandham

Mon Sep 17, 2012 6:39 am- Forum: Data Sufficiency
- Topic: X&Y
- Replies:
**4** - Views:
**1013**

Jonathan - The answer is incorrect because the question is

*What is the sum of all the even integers between 99 and 301 ? *

and NOT

*What is the sum of all the integers between 99 and 301 ? *

- by neelgandham

Mon Sep 17, 2012 6:26 am- Forum: Problem Solving
- Topic: For any positive integer n, the sum of
- Replies:
**7** - Views:
**3730**

- by neelgandham

Mon Sep 17, 2012 6:19 am- Forum: Data Sufficiency
- Topic: OG 13 ,median problem
- Replies:
**1** - Views:
**721**

Q)If r and s are +ve integers and the ratio r/s is expressed as a decimal,is r/s a terminating decimal? 1) 90<r<100 91/99 is a recurring decimal. 91/91 is a terminating decimal. Since we don't have a definite answer, statement I is insufficient to answer the question. 2) s=4 r/s = 0.25 * r = Always ...

- by neelgandham

Mon Sep 17, 2012 6:17 am- Forum: Data Sufficiency
- Topic: OG 13 ,terminating decimal problem
- Replies:
**2** - Views:
**1175**

Q) If @ represents one of the operators +,- and * , is [email protected](l+m)=([email protected])+([email protected]) for all numbers k,l and m ? 1)[email protected] is not equal to [email protected] for some number k. Let @ be *, then k*1 = 1*k. So, @ can't be *. Let @ be +, then k+1 = 1+k. So, @ can't be +. Let @ be -, then k-1 != 1-k(not always). So, @ is '-'. and t...

- by neelgandham

Mon Sep 17, 2012 6:09 am- Forum: Data Sufficiency
- Topic: OG 13, operator problem
- Replies:
**4** - Views:
**1196**

The answer is 10hours and 9hours. I will post a detailed explanation in a bit. Before that, Can you please cite the source of the question please? It doesn't look like a GMAT type question.

- by neelgandham

Sun Sep 16, 2012 7:46 am- Forum: Problem Solving
- Topic: Time and Distance problem
- Replies:
**3** - Views:
**2375**