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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

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:

From 1) m={5,7,11,13,17,19,23,25,29} - m is divisible by itself ,or itself and 5(Prime), So 1 Should not be sufficient

From 2) m = {3,7,9,11,13,17,19,21,23,27,29} - m is divisible by itsefl ,or itself and 3(Prime), so 2 is not sufficient.

from 1& 2 m= {5,7,11,13,17,19,23,29} - So only m is divisible by itself.

Astonishingly, the OE is not C.

{5,7,11,13,17,19,23,25,29} all numbers divisible only by 1 prime
Check it: all primes divisible only by itself, and 5 and 25 divisible only by one prime - 5
A it is.

From 1) m={5,7,11,13,17,19,23,25,29} - m is divisible by itself ,or itself and 5(Prime), So 1 Should not be sufficient

From 2) m = {3,7,9,11,13,17,19,21,23,27,29} - m is divisible by itsefl ,or itself and 3(Prime), so 2 is not sufficient.

from 1& 2 m= {5,7,11,13,17,19,23,29} - So only m is divisible by itself.

Astonishingly, the OE is not C.

{5,7,11,13,17,19,23,25,29} all numbers divisible only by 1 prime Check it: all primes divisible only by itself, and 5 and 25 divisible only by one prime - 5 A it is.

another explanation is that when the number is odd and not divisible by 3, the next prime numbers are 5 and 7; the first number divisible by both 7 and 5 is 35, but 35 is out of definition, so it has to be only one distinct prime factor, thats why A is correct

if it is not divisible by 5, then 3 and 7 are possible and it could be for example 21 with two distinct primes