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

It is currently 23 Oct 2019, 22:20

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

M13-32

  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: 58473
M13-32  [#permalink]

Show Tags

New post 16 Sep 2014, 00:50
1
2
00:00
A
B
C
D
E

Difficulty:

  85% (hard)

Question Stats:

41% (01:42) correct 59% (02:02) wrong based on 68 sessions

HideShow timer Statistics

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58473
Re M13-32  [#permalink]

Show Tags

New post 16 Sep 2014, 00:50
Intern
Intern
avatar
B
Joined: 01 Feb 2017
Posts: 3
Location: India
GMAT 1: 690 Q47 V37
GPA: 4
Reviews Badge
Re: M13-32  [#permalink]

Show Tags

New post 08 Apr 2018, 22:26
For values less than zero even both the statements are not enough.
check with values less than zero
Intern
Intern
avatar
B
Joined: 02 Feb 2018
Posts: 31
Re: M13-32  [#permalink]

Show Tags

New post 02 Nov 2018, 10:30
You can save a lot of time on this one when you start by picking numbers that satisfy both statements at the same time as Bunuel did.. I wonder if this should be the default state when facing DS questions where picking numbers is obviously the best way to go - any advice on this? Or what specific signaled you in this question that this is the best strategy?
VP
VP
User avatar
P
Joined: 14 Feb 2017
Posts: 1220
Location: Australia
Concentration: Technology, Strategy
Schools: LBS '22
GMAT 1: 560 Q41 V26
GMAT 2: 550 Q43 V23
GMAT 3: 650 Q47 V33
GMAT 4: 650 Q44 V36
WE: Management Consulting (Consulting)
Reviews Badge CAT Tests
Re: M13-32  [#permalink]

Show Tags

New post 14 May 2019, 22:48
Stat.1
3> 2> 1
a=2, b=3

3^2 > 2^3?
9 is not greater than 8 -->No

Test for Yes
4>2>1
a=4, b=2
4^2 > 2^4?
16>16? No

Therefore Stat.(1)--> Insufficient


Statement 2
a= b+1
-1=-2+1
a=-1 b = -2
1>-1/2 ? Yes

a= 4, b= 3
4=3+1
4^3 > 3^4?
64>81? No
Statement (2) --> Insufficient

1+2 combined we have b+1>b>1

a and b are consecutive. One case 3>2>1 is already valid for Yes ( that a^b > b^a)

So lets test for no:

5>4>1

5^4 > 4^5?
625 > 1024? No.

Therefore E
_________________
Goal: Q49, V41

+1 Kudos if I have helped you
Manager
Manager
avatar
S
Joined: 15 Jul 2016
Posts: 101
Location: India
Schools: Oxford "21 (A)
GMAT 1: 690 Q48 V36
CAT Tests
Re: M13-32  [#permalink]

Show Tags

New post 22 Jul 2019, 23:30
1
It's good to remember the following rule...

IF there are 2 positive numbers, then the number which has a greater power will be greater.
eg; 8^9 > 9^8 even though 9>8.

However, there are two exceptions to the rule:

1) 2^3 < 3^2
==> 8<9

2) 2^4 = 4^2
==> 16 = 16.

Once you know these properties, it'll be easier two pick the numbers. As you can see, the 1st exception satisfies both the conditions.


Thanks!
_________________
Please give Kudos if you agree with my approach :)
Manager
Manager
User avatar
B
Joined: 03 Sep 2018
Posts: 179
CAT Tests
Re: M13-32  [#permalink]

Show Tags

New post 13 Oct 2019, 22:43
578vishnu wrote:
It's good to remember the following rule...

IF there are 2 positive numbers, then the number which has a greater power will be greater.
eg; 8^9 > 9^8 even though 9>8.

However, there are two exceptions to the rule:

1) 2^3 < 3^2
==> 8<9

2) 2^4 = 4^2
==> 16 = 16.

Once you know these properties, it'll be easier two pick the numbers. As you can see, the 1st exception satisfies both the conditions.


Thanks!


Bunuel could you confirm this?
GMAT Club Bot
Re: M13-32   [#permalink] 13 Oct 2019, 22:43
Display posts from previous: Sort by

M13-32

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

Moderators: chetan2u, Bunuel






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