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C) a thick layer of needles protect the buds from which new growth proceeds; thus, they are able to withstand relatively well any forest fires - the correct verb is "a thick layer [of needles] protects ..." Hello Ceilidh , Can you please explain more above reason to eliminate this option?...

by GMATsid2016

Wed Nov 16, 2016 9:30 am
Forum: Sentence Correction
Topic: OG'17
Replies: 14
Views: 9323

Defying efforts by policymakers

Defying efforts by policymakers on both side of the Atlantic at restraining it, the United states dollar, continuing its rise, reaching its highest level in six years against the German mark. A) at restraining it, the United states dollar, continuing its rise, reaching B) at restraining it, the rise...

by GMATsid2016

Wed Nov 16, 2016 8:40 am
Forum: Sentence Correction
Topic: Defying efforts by policymakers
Replies: 1
Views: 1391

This question is testing PARALLELISM. In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting. (A) which is a substanc...

by GMATsid2016

Wed Nov 16, 2016 8:25 am
Forum: Sentence Correction
Topic: In laboratory rats
Replies: 4
Views: 2223

In laboratory rats

In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting. (A) which is a substance that promotes blood clotting, but not...

by GMATsid2016

Tue Nov 15, 2016 9:26 am
Forum: Sentence Correction
Topic: In laboratory rats
Replies: 4
Views: 2223

Hello Experts,

Can you please explain statement 2 in algebraic?

Thanks,

Sid

by GMATsid2016

Mon Nov 14, 2016 8:46 am
Forum: Data Sufficiency
Topic: Question in attachment
Replies: 7
Views: 2767

If xy + z = x(y+z)

If xy + z = x(y+z), which of the following must be true?

A) x=0 and z=0

B) x=1 and y=1

C) y=1 and z=0

D) x=1 or y=0

E) x=1 or z=0

How come OA isE?

Please explain OR AND in choices?

I got x=1, but how come [spoiler]z=0[/spoiler]?

Thanks,

Sid

by GMATsid2016

Mon Nov 14, 2016 8:37 am
Forum: Problem Solving
Topic: If xy + z = x(y+z)
Replies: 4
Views: 2414

Let's start by plugging in some positive values of x and see what we get. x = 1/2 1/x = 2 2x = 1 x² = 1/4 So, we get x² < 2x < 1/x This matches statement I. x = 3/4 1/x = 4/3 2x = 3/2 x² = 9/16 So, we get x² < 1/x < 2x This matches statement II x = 3 1/x = 1/3 2x = 6 x² = 9 So, we get 1/x < 2x...

by GMATsid2016

Mon Nov 14, 2016 8:23 am
Forum: Problem Solving
Topic: correct ordering of 1/x, 2x, and x^2
Replies: 6
Views: 2854

Determine the CRITICAL POINTS by setting the expressions equal to each other: 1/x = 2x 2x² = 1 x² = 1/2 x = √(1/2) = 1/√2 ≈ 1/1.4 ≈ 10/14 ≈ 5/7. 1/x = x² x^3 = 1 x = 1. 2x = x² x=2 (We can divide by x because x>0.) Hello GMATGuruNY, Can you please explain the above part? Thanks, Sid

by GMATsid2016

Mon Nov 14, 2016 8:19 am
Forum: Problem Solving
Topic: correct ordering of 1/x, 2x, and x^2
Replies: 6
Views: 2854

correct ordering of 1/x, 2x, and x^2

If X is positive, which of the following could be the correct ordering of 1/x, 2x, and x^2

|. x^2<2x<1/x

||.x^2<1/x<2x

|||. 2x<x^2<1/x

A) None

B) | only

C) |||only

D) | and || only

E) |,||, and |||

OAD

What should be the approach of this kind of question?

by GMATsid2016

Sun Nov 13, 2016 4:45 am
Forum: Problem Solving
Topic: correct ordering of 1/x, 2x, and x^2
Replies: 6
Views: 2854