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.

Re: What is the least integer n such that [#permalink]
20 Jun 2018, 04:56

1

This post received KUDOS

Expert's post

Ronaksingh wrote:

how did you cross multiply? please explain

Let's do this in steps...

We have the inequality: 1/(2^n) < 1/1000 Since 2^n is always POSITIVE, we can multiply both sides by 2^n to get: 1 < (2^n)/1000 Also, since 1000 is POSITIVE, we can multiply both sides by 1000 to get: 1000 < 2^n

Here's a video on dealing with inequalities like this:

_________________

Brent Hanneson – Creator of greenlighttestprep.com Sign up for our free GRE Question of the Dayemails

greprepclubot

Re: What is the least integer n such that
[#permalink]
20 Jun 2018, 04:56