It is currently 21 Oct 2017, 06:13
My Tests

Close

GMAT Club Daily Prep

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.

The number of zeros at the end of m when written in integer

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Moderator
Moderator
User avatar
Joined: 18 Apr 2015
Posts: 2141
Followers: 30

Kudos [?]: 309 [0], given: 1270

The number of zeros at the end of m when written in integer [#permalink] New post 16 Sep 2017, 10:35
Expert's post
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions



m=2^{16}3^{17}4^{18}5^{19}

n=2^{19}3^{18}4^{17}5^{16}



Quantity A
Quantity B
The number of zeros at the end of m when
written in integer form
The number of zeros at the end of n when
written in integer form


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

_________________

Get the 17 FREE GREPrepclub Tests

Senior Manager
Senior Manager
Joined: 03 Sep 2017
Posts: 387
Followers: 0

Kudos [?]: 108 [0], given: 64

Re: The number of zeros at the end of m when written in integer [#permalink] New post 21 Sep 2017, 08:41
Any help with this one?
1 KUDOS received
Intern
Intern
Joined: 06 Sep 2017
Posts: 1
Followers: 0

Kudos [?]: 1 [1] , given: 0

Re: The number of zeros at the end of m when written in integer [#permalink] New post 05 Oct 2017, 18:01
1
This post received
KUDOS
can be written as
m = 2^16 3^17 4^17 5^16 4 5^3
n = 2^16 3^17 4^17 5^16 3 2^3
now we see in first 4 terms are same for both m and n but it m we see 5^3 * 4 that means two more zeroes
thats why quantity a is greater
Intern
Intern
Joined: 16 Sep 2017
Posts: 1
Followers: 0

Kudos [?]: 0 [0], given: 2

Re: The number of zeros at the end of m when written in integer [#permalink] New post 09 Oct 2017, 22:17
the number of zeroes will be determined by the number of 5s and 2s. since 5*2 gives us one zero, the number of zeroes will be the number of (5*2) that we get. So in first case it is 19 and in second case it is 16. Hence A is greater than B. :)
Re: The number of zeros at the end of m when written in integer   [#permalink] 09 Oct 2017, 22:17
Display posts from previous: Sort by

The number of zeros at the end of m when written in integer

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GRE Prep Club Forum Home| About| Terms of Use| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.