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: Which of the following is the lowest positive integer that [#permalink]
10 Jan 2013, 15:27

Expert's post

sambam wrote:

Which of the following is the lowest positive integer that is divisible by the first 7 positive integer multiples of 5?

A. 140 B. 210 C. 1400 D. 2100 E. 3500

The first 7 positive multiples of 5 are 5, 10, 15, 20, 25, 30 and 35. The least common multiple of these numbers is 2,100.

Answer: D.

Or: Discard 140, 1,400 and 3,500 because they are not divisible by 3. Discard 210 because it's not divisible by 4. Only option D remains. _________________

Re: Which of the following is the lowest positive integer that [#permalink]
10 Jan 2013, 17:33

Which of the following is the lowest positive integer that is divisible by the first 7 positive integer multiples of 5?

A. 140 B. 210 C. 1400 D. 2100 E. 3500

Take 5,10,15,20,25,30, and 35

You can eliminate A and B right off the bat because 25 doesn't go into 140 or 210. I found it easier to look take a two of the multiples and test their divisibility among the choices. If one doesn't work its wrong so 30 and 35.

C) Wrong not divisible by 30 D) Yes for both check 15 that's the only other obscure multiple E) Not divisible by 30

Re: Which of the following is the lowest positive integer that [#permalink]
10 Jan 2013, 17:53

Expert's post

hitman5532 wrote:

Bunuel wrote:

sambam wrote:

Which of the following is the lowest positive integer that is divisible by the first 7 positive integer multiples of 5?

A. 140 B. 210 C. 1400 D. 2100 E. 3500

The first 7 positive multiples of 5 are 5, 10, 15, 20, 25, 30 and 35. The least common multiple of these numbers is 2,100.

Answer: D.

Or: Discard 140, 1,400 and 3,500 because they are not divisible by 3. Discard 210 because it's not divisible by 4. Only option D remains.

Why are we looking at divisibility by 3 and 4?

The least common multiple of 5, 10, 15, 20, 25, 30 and 35 must be a multiple of 3 since 15 is a multiple of 3 and it must a multiple of 4 since 20 is a multiple of 4.

Hey everyone, today’s post focuses on the interview process. As I get ready for interviews at Kellogg and Tuck (and TheEngineerMBA ramps up for his HBS... ...

I got invited to interview at Sloan! The date is October 31st. So, with my Kellogg interview scheduled for this Wednesday morning, and my MIT Sloan interview scheduled...

Not all good communicators are leaders, but all leaders are good communicators. Communication is an essential tool that leaders need to use in order to get anything done. Almost...

Despite being a long weekend with Thanksgiving, this week was very tiring for me in various ways. Besides the pressure of learning materials I am not familiar with such...