Last visit was: 29 Apr 2026, 17:49 It is currently 29 Apr 2026, 17:49
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 29 Apr 2026
Posts: 109,975
Own Kudos:
811,985
 [4]
Given Kudos: 105,949
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,975
Kudos: 811,985
 [4]
If n is a positive integer, is n + 2 > z? 17 Mar 2016, 03:59
Kudos
Add Kudos
4
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

25% (medium)

Question Stats:

74% (01:45) correct 26% (02:08) wrong based on 227 sessions

History

Date
Time
Result
Not Attempted Yet
If n is a positive integer, is n + 2 > z?

(1) z^2 > n
(2) z – n < 0
ShowHide Answer
Official Answer
B
User avatar
Kurtosis
User avatar
Current Student
Joined: 13 Apr 2015
Last visit: 10 Nov 2021
Posts: 1,384
Own Kudos:
5,238
 [2]
Given Kudos: 1,228
Location: India
Products:
My Reviews
Posts: 1,384
Kudos: 5,238
 [2]
If n is a positive integer, is n + 2 > z? 17 Mar 2016, 07:09
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
St1: z^2 > n --> z > n or z < n --> Not Sufficient

St2: z < n --> If z < n then z < n + 2. Sufficient

Answer: B
User avatar
rohit8865
User avatar
Joined: 05 Mar 2015
Last visit: 19 Apr 2026
Posts: 815
Own Kudos:
1,008
Given Kudos: 45
Products:
My Reviews
Posts: 815
Kudos: 1,008
If n is a positive integer, is n + 2 > z? 17 Mar 2016, 09:46
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
If n is a positive integer, is n + 2 > z?

(1) z^2 > n
(2) z – n < 0
Show more


(1)
consider z=-2 & n=1 then (-2)^2>1
so 1+2>-2.....Yes
consider z=5 & n=1 then (5)^2>1
so 1+2>5.....NO
insuff....
(2)
z-n<0
z<n
as n is positive so n+2 is always >z
suff...
Ans b
User avatar
BrentGMATPrepNow
User avatar
Major Poster
Joined: 12 Sep 2015
Last visit: 31 Oct 2025
Posts: 6,733
Own Kudos:
36,478
 [1]
Given Kudos: 799
Location: Canada
Expert
Expert reply
Posts: 6,733
Kudos: 36,478
 [1]
If n is a positive integer, is n + 2 > z? 07 Aug 2016, 14:33
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
If n is a positive integer, is n + 2 > z?

(1) z² > n
(2) z – n < 0
Show more

Target question: Is n + 2 > z?

Given: n is a positive integer

Statement 1: z² > n
This statement doesn't FEEL sufficient, so I'll TEST some values.
There are several values of z and n that satisfy statement 1. Here are two:
Case a: z = 2 and n = 3. In this case, n + 2 = 3 + 2 = 5, which means n + 2 > z
Case b: z = 10 and n = 3. In this case, n + 2 = 3 + 2 = 5, which means n + 2 < z
Since we cannot answer the target question with certainty, statement 1 is NOT SUFFICIENT

Aside: For more on this idea of plugging in values when a statement doesn't feel sufficient, you can read my article: https://www.gmatprepnow.com/articles/dat ... lug-values

Statement 2: z – n < 0
Add n to both sides to get: z < n
We ALSO know that n < n + 2
So, we get COMBINE both inequalities to get: z < n < n + 2
From this, we can conclude that z < n + 2
Since we can answer the target question with certainty, statement 2 is SUFFICIENT

Answer:
Show Spoiler
B

RELATED VIDEO:
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,996
Own Kudos:
1,120
Posts: 38,996
Kudos: 1,120
If n is a positive integer, is n + 2 > z? 10 Feb 2024, 04:54
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderators:
Bunuel
Math Expert
109975 posts
kingbucky
498 posts
Gmat860sanskar
212 posts