Search found 24 matches


Re: factor question

30 = 2*3*5

So factors are 1,2,3,5,6,10,15,30.

Apart from 1,2,3,5, and 30, find the product of 2,3, and 5 in all combinations.

by manju_ej

Tue Aug 05, 2008 8:21 am
Forum: Problem Solving
Topic: factor question
Replies: 7
Views: 1798

Re: Gprep PS

Thanks , the answer is 2.5.

by manju_ej

Tue Aug 05, 2008 8:11 am
Forum: Problem Solving
Topic: Gprep PS
Replies: 7
Views: 2433

Gprep PS

A boat travelled upstream a distance of 90 miles at an average speed of (v-3) miles per hour and then travelled downstream at an average speed of (V+3) miles per hour. If the trip upstream took half an hour longer than the trip downstream, how many hours did it take the boat to travel downstream?

by manju_ej

Tue Aug 05, 2008 7:22 am
Forum: Problem Solving
Topic: Gprep PS
Replies: 7
Views: 2433

GPrep PS

All of the stocks on the over the counter market are deisgnated by either a 4-letter or a 5-letter code that is created by using the 26 letteres of the alphabet. Which of the following gives the maximum number of the different stocks that can be designated with these codes? 1)2(26^5) 2) 26(26^4) 3) ...

by manju_ej

Tue Aug 05, 2008 7:08 am
Forum: Problem Solving
Topic: GPrep PS
Replies: 1
Views: 1164

GMAT Prep PS

For every positive even integer n, the function h(n) is defined to be the product of all the even integers from 2 to n,inclusive. If P is the smallest prime factor of h(100)+1, then P is

1)b/w 2 & 10
2)b/w 10 & 20
3)b/w 20 & 30
4)b/w 30 & 40
5) greater than 40

by manju_ej

Tue Aug 05, 2008 7:05 am
Forum: Problem Solving
Topic: GMAT Prep PS
Replies: 1
Views: 1211

Gmat Prep PS

Three grades of milk are 1 percent, 2 percent and 3 percent fat by volume. If X gallons of the 1 percent grade, Y gallons of the 2 percent grade and Z gallons of the 3 percent grade are mixed to give X+Y+Z gallons of a 1.5 percent grade, What is X in terms of Y and Z?

by manju_ej

Tue Aug 05, 2008 7:02 am
Forum: Problem Solving
Topic: Gmat Prep PS
Replies: 1
Views: 1247

Kindly explain - DS Number Properties

If x is a positive integer , is x^3 - 3x^2+2x divisible by 4?

1. x=4y+4, where y is an integer
2. x=2z+2, where z is an integer

Answer is D ,
but my Q , why the possibility that Z = 0 not taken?
In that case X=2, and product of x,(x-2),(x-1) is Zero and this is not divisible by 4!

by manju_ej

Tue Aug 05, 2008 1:32 am
Forum: Data Sufficiency
Topic: Kindly explain - DS Number Properties
Replies: 2
Views: 1366

Re: Modifier Problem

codesnooker wrote:I try to solve it. But second time also get incorrect choice.
I could narrow my options to B/E.

But I prefer E as B is in the passive voice.

The answer is E, the modifier is correctly touching the noun scientists, which is not the case in other options.

by manju_ej

Mon Aug 04, 2008 8:44 am
Forum: Sentence Correction
Topic: Modifier Problem
Replies: 11
Views: 2221
by manju_ej

Mon Aug 04, 2008 8:27 am
Forum: Sentence Correction
Topic: SC_GMATPREP:WHY and HOW Please.
Replies: 8
Views: 1934

Kindly explain this SC

In addition to her work on the Miocene hominid fossil record, Mary Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting East African cave paintings. a) Leakey contributed to archaeology with her discovery of the earlie...

by manju_ej

Mon Aug 04, 2008 8:17 am
Forum: Sentence Correction
Topic: Kindly explain this SC
Replies: 7
Views: 2590

Re: exponents

2+2+2^2+2^3+2^4+2^5+2^6+2^7+2^8+2^9+2^10= 1. 2^10 2. 2^11 3. 2^18 4. 2^54 5. 2^56 The answer is 2^11 Remove the first term (2) and take a look at the remaining portions. They are in the Geometric Progression. So the formula to find the sum of n terms of a geometric progression is S=b1*(1-r^n/1-r), ...

by manju_ej

Mon Jul 21, 2008 8:23 am
Forum: Problem Solving
Topic: exponents
Replies: 6
Views: 1879

Re: GMAT Prep - Geometry

Angle BDC (2x)= angle DAB(X)+ angle DBA(X) ie 2X= sum of the non-adjacent angles(X+X) So it can be concluded, AD =BD = BC.(Isoceles triangles) Statement (1) AD=6, sufficient , so BC = 6 Statemet (2) X=36, this info just reiterates the fact AD= BD=BC, but without the length of any one of these sides,...

by manju_ej

Thu Jul 17, 2008 1:45 am
Forum: Problem Solving
Topic: GMAT Prep - Geometry
Replies: 6
Views: 1705

Re: How i got a 760 !

Hi Raj, I couldnt download the attachments. The following error is displayed, The selected Attachment does not exist anymore 404 File Not Found: The File files/probability_review_103.doc does not exist. Note: I downloaded them from the GMAT resources. Q1: How long did it take u to prepare for GMAT? ...

by manju_ej

Thu Jul 10, 2008 11:19 pm
Forum: I just Beat The GMAT!
Topic: How i got a 760 !
Replies: 13
Views: 4708