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Hormones

766. The human growth hormone, made by the pituitary gland, is secreted during sleep in higher concentrations than when awake. (A) during sleep in higher concentrations than when awake (B) when sleeping in higher concentrations than waking hours (C) in higher concentrations during sleeping than waki...

by vikram_k51

Sat Aug 29, 2009 9:33 am
Forum: Sentence Correction
Topic: Hormones
Replies: 12
Views: 5017

I’d go with C 1. y = x + 1 Xy = x(x+1) Xy = x^2+x Insuff. 2. y = x^2+1 Xy = x(x^2+1) Xy = X^3+x Insuff. 1+2 X+1 = x^2+1……………or x = x^2 0 = X^2 – x 0 = X(x-1) Case 1: x = 0 Then XY must equal 0 Case 2: x-1=0…………………….or x = -1 Plug this back into first equation y = x+1 Y...

by vikram_k51

Fri Aug 28, 2009 12:01 am
Forum: Data Sufficiency
Topic: DS - XY value
Replies: 7
Views: 1123

Re: DS - XY value

Xbond wrote:Hi there,

Could you explain in the simplest this concept and how to resolve it


What is the value of xy ?
(1) y = x + 1
(2) y = x (square) + 1
Will be E. xy can either be 0 or 2.

by vikram_k51

Thu Aug 27, 2009 11:59 pm
Forum: Data Sufficiency
Topic: DS - XY value
Replies: 7
Views: 1123

Re: Absolute values - Cant understand explanation

Hi, I came upon this data sufficiency problem in the Manhattan GMAT Cat 2. I am trying to understand the explanation provided but no luck so far. Can anyone help me out? Is this some basic concept I have missed out on? Thanks! Here is the question....The underlined sentence is what confuses me and ...

by vikram_k51

Thu Aug 27, 2009 11:54 pm
Forum: Data Sufficiency
Topic: Absolute values - Cant understand explanation
Replies: 4
Views: 1010

Re: Equations

niraj_a wrote:If x^2/9 – 4/y^2 = 12, what is the value of x?

(1) x/3 + 2/y = 6

(2) x/3 – 2/y = 2

Those blobs stand for negative
Answer will be D.

by vikram_k51

Thu Aug 27, 2009 11:48 pm
Forum: Data Sufficiency
Topic: Equations
Replies: 7
Views: 1359

Re: modulus

Rajani wrote:if xy+z=z, is |x-y|>0?

a. x!=0
b. y=0
Will be A.

by vikram_k51

Thu Aug 27, 2009 11:46 pm
Forum: Data Sufficiency
Topic: modulus
Replies: 6
Views: 1174

Re: Is Y a fraction?

umaa wrote:X,Y > 0 ,If X^3 = Y, is Y a fraction?

(1) X^2 is a fraction
(2) X >Y
Will be D

by vikram_k51

Thu Aug 27, 2009 11:42 pm
Forum: Data Sufficiency
Topic: Is Y a fraction?
Replies: 4
Views: 985

Re: Fence

Yves can paint a certain fence in 1/2 the time it takes Marcel to paint the same fence. If they work together, each at his own constant rate, how many hours will it take them to paint the fence? (1) Yves can paint the fence by himself in 3 hours. (2) Working together, each at his own constant rate,...

by vikram_k51

Thu Aug 27, 2009 11:34 pm
Forum: Data Sufficiency
Topic: Fence
Replies: 8
Views: 3613

Re: Remainder

N is an integer, r is the remainder when ((N-1)*(N+1)) is divided by 24. What is the value of r ? 1) N is not a multiple of 2. 2) N is not a multiple of 3. Will be C. For any odd Integer greater than 3 the rem is 0. Now if N is not a multiple of 3 then N is any odd integer greater than 3 which give...

by vikram_k51

Thu Aug 27, 2009 11:29 pm
Forum: Data Sufficiency
Topic: Remainder
Replies: 13
Views: 1810

Re: Sum of digits

goelmohit2002 wrote:A,B and C are 3 digit integers, where A = B + C. Is the hundreds' digit of number A equal to sum of hundreds' digit of B and C ?
1) Tens' digit of A = Tens' digit of B + Tens' digit of C
2) Units' digit of A = Units' digit of B + Units' digit of C

OA = After some discussion.
Think it will be A

by vikram_k51

Thu Aug 27, 2009 11:24 pm
Forum: Data Sufficiency
Topic: Sum of digits
Replies: 13
Views: 1497

Moral goodness

It has been claimed that an action is morally good only if it benefits another person and was performed with that intention; whereas an action that harms another person is morally bad either if such harm was intended or if reasonable forethought would have shown that the action was likely to cause h...

by vikram_k51

Wed Aug 26, 2009 9:16 am
Forum: Critical Reasoning
Topic: Moral goodness
Replies: 4
Views: 2258

Homelessness

Politician: Homelessness is a serious social problem, but further government spending to provide low-income housing is not the cure for homelessness. The most cursory glance at the real-estate section of any major newspaper is enough to show that there is no lack of housing units available to rent. ...

by vikram_k51

Wed Aug 26, 2009 9:14 am
Forum: Critical Reasoning
Topic: Homelessness
Replies: 1
Views: 1598

Physicalists

“Physicalists� expect that ultimately all mental functions will be explainable in neurobiological terms. Achieving this goal requires knowledge of how neurons and their basic functions, a knowledge of how neurons interact, and a delineation of the psychological faculties to be explained. At pres...

by vikram_k51

Wed Aug 26, 2009 9:10 am
Forum: Critical Reasoning
Topic: Physicalists
Replies: 1
Views: 1737

Greek Statue

710. The colorization of black-and-white films by computers is defended by those who own the film rights, for the process can mean increased revenues for them; many others in the film industry, however, contend that the technique degrades major works of art, which they liken to putting lipstick on a...

by vikram_k51

Wed Aug 26, 2009 7:44 am
Forum: Sentence Correction
Topic: Greek Statue
Replies: 2
Views: 993

Weather planes

722. The data collected by weather airplanes that fly into the heart of a hurricane are useful mainly for gauging the storm’s structure and strength, not for the speed and the path of their movement. (A) not for the speed and the path of their movement (B) not for the speed and path of its movemen...

by vikram_k51

Wed Aug 26, 2009 7:19 am
Forum: Sentence Correction
Topic: Weather planes
Replies: 4
Views: 2531