It is currently 18 Dec 2018, 23:06
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.

If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4756
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1668 [0], given: 396

CAT Tests
If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest [#permalink] New post 18 Mar 2018, 06:35
Expert's post
00:00

Question Stats:

80% (00:21) correct 20% (00:43) wrong based on 5 sessions
If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest possible value of a – b ?

Drill 2
Question: 11
Page: 499


[Reveal] Spoiler: OA
12

_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

Manager
Manager
Joined: 27 Sep 2017
Posts: 112
Followers: 1

Kudos [?]: 29 [0], given: 4

Re: If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest [#permalink] New post 20 Mar 2018, 05:36
sandy wrote:
If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest possible value of a – b ?

Drill 2
Question: 12
Page: 499


[Reveal] Spoiler: OA
11


the ANS should be 12 NOT 11, please check it out. It would be possible that you ignore the equation mark.
Moderator
Moderator
User avatar
Joined: 18 Apr 2015
Posts: 5205
Followers: 77

Kudos [?]: 1053 [0], given: 4711

CAT Tests
Re: If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest [#permalink] New post 20 Mar 2018, 08:36
Expert's post
Ideally, in this question, you should maximize A and minimize B to have the greatest possible value.

However, it is a bad question because should specify if the numbers in the brackets are integers or not.

Regards
_________________

Get the 2 FREE GREPrepclub Tests

GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4756
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1668 [0], given: 396

CAT Tests
Re: If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest [#permalink] New post 20 Mar 2018, 14:55
Expert's post
Peter wrote:
sandy wrote:
If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest possible value of a – b ?

Drill 2
Question: 12
Page: 499


[Reveal] Spoiler: OA
11


the ANS should be 12 NOT 11, please check it out. It would be possible that you ignore the equation mark.


Fixed! Thanks for pointing out!
_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4756
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1668 [0], given: 396

CAT Tests
Re: If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest [#permalink] New post 20 Mar 2018, 15:28
Expert's post
Explanation

You are being asked to subtract the a and b terms. Be careful that you don’t just combine the largest value of a with the largest value of b to get a – b = 9 – 2 = 7, the wrong
answer.

When you combine inequalities, you have to make four calculations to check the four possibilities.

Subtract the smallest values of a and b: –4 – (–3) = –1. Subtract the largest values of a and b: 9 – 2 = 7.

Subtract the smallest value of a and the largest value of b: –4 – 2 = 6.

Subtract the largest value of a and the smallest value of b: 9 – (–3) = 12. Of the four possible values above, the greatest possible value is 12.
_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

Re: If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest   [#permalink] 20 Mar 2018, 15:28
Display posts from previous: Sort by

If –4 ≤ a ≤ 9, and –3 ≤ b ≤ 2, then what is the greatest

  Question banks Downloads My Bookmarks Reviews Important topics  


GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| 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®.