GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 19 Nov 2019, 23:14

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.

Close

Request Expert Reply

Confirm Cancel

The function f is defined for all positive, three-digit integers as

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 59150
The function f is defined for all positive, three-digit integers as  [#permalink]

Show Tags

New post 25 Apr 2017, 02:14
1
15
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

50% (02:00) correct 50% (02:11) wrong based on 189 sessions

HideShow timer Statistics

Most Helpful Community Reply
Current Student
User avatar
S
Joined: 22 Jun 2016
Posts: 223
Reviews Badge
Re: The function f is defined for all positive, three-digit integers as  [#permalink]

Show Tags

New post 25 Apr 2017, 04:13
5
2
S1. f(m)=8f(n)

f(m) = 2^3 f(n)

f(x) = 2^a * 3^b * 5^c

so, we now know that only a is different in f(m) and f(n), b and c are same.
we also know that a in f(m) is 3 greater than a in f(n).

a is the hundreds digit of the number. So, if m=401, n =101 or m=996, n=696

m-n in all case would be 300.

Sufficient!

S2. No mention of m.

Insufficient!

Hence, answer will be A.
_________________
P.S. Don't forget to give Kudos :)
General Discussion
Intern
Intern
avatar
B
Joined: 07 Jul 2018
Posts: 8
WE: Medicine and Health (Military & Defense)
Re: The function f is defined for all positive, three-digit integers as  [#permalink]

Show Tags

New post 21 Nov 2018, 13:45
The question doesn't mention that m and n are three digit numbers?
Is it implied?
If they are not three digit numbers then A cannot be the answer.
GMAT Club Bot
Re: The function f is defined for all positive, three-digit integers as   [#permalink] 21 Nov 2018, 13:45
Display posts from previous: Sort by

The function f is defined for all positive, three-digit integers as

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne