Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Re: DS - Inequality [#permalink]
29 Feb 2008, 08:00

At first I thought those were negatives. But I don't think they are meant to be neg's, so I came up with E as the answer. Neither are sufficient. 2 tells you that Z is positive. You still can't determine if Z is < 4.

Re: DS - Inequality [#permalink]
29 Feb 2008, 12:02

I assumed they were negative signs as well.

Stmt 1: negative Z < 9, which when you divide both sides by negative 1 you get: Stmt 1: Z > -9 Stmt 2: negative T < negative 4, which when you divide both sides by negative 1 you get: Stmt 2: T > 4

We know Z*T is < -3 which tells us Z < -3T

Stmt 1: Z > -9 Insuff. Z could be larger or smaller than 4 depending on T

Stmt 2: T > 4 Suff. If T is any number greater than 4 then Z will always be less than 4.

gmatclubot

Re: DS - Inequality
[#permalink]
29 Feb 2008, 12:02