It is currently 22 Mar 2019, 09:25

### 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

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

# GRE Math Challenge #1-x is an integer, and 169 < x^2 < 324

Author Message
TAGS:
Director
Joined: 16 May 2014
Posts: 595
GRE 1: Q165 V161
Followers: 94

Kudos [?]: 456 [0], given: 64

GRE Math Challenge #1-x is an integer, and 169 < x^2 < 324 [#permalink]  06 Aug 2014, 13:47
Expert's post
00:00

Question Stats:

53% (00:43) correct 46% (00:45) wrong based on 30 sessions
Level 170 question

If x is an integer, and $$169 < x^2 < 324$$, which of the following is the sum of all values of x?

(A) 61

(B) 62

(C) 75

(D) 93

(E) None of the above.
[Reveal] Spoiler: OA

_________________

My GRE Resources
Free GRE resources | GRE Prep Club Quant Tests
If you find this post helpful, please press the kudos button to let me know !

Intern
Joined: 18 Jun 2014
Posts: 42
Followers: 1

Kudos [?]: 26 [1] , given: 15

Re: GRE Math Challenge #1 [#permalink]  06 Aug 2014, 23:45
1
KUDOS
Correct answer is 0, Hence (E).
x = {-17,-16,-15,-14,14,15,16,17}, Sum of all values = 0
Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 09 May 2016
Posts: 161
Location: United States
Followers: 4

Kudos [?]: 124 [1] , given: 0

Re: GRE Math Challenge #1-x is an integer, and 169 < x^2 < 324 [#permalink]  20 Dec 2017, 06:21
1
KUDOS
Expert's post
soumya1989 wrote:
Level 170 question

If x is an integer, and $$169 < x^2 < 324$$, which of the following is the sum of all values of x?

(A) 61

(B) 62

(C) 75

(D) 93

(E) None of the above.

We are given that 169 < x^2 < 324. That is, 13 < |x| < 18. If x is positive, x = 14, 15, 16, 17. If x is negative, x = -14, -15, -16, -17. We see that for every positive value of x, the opposite (or negative) is also a possibility. Thus, the sum of all values of x will be zero.

_________________

Jeffery Miller

GRE Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Re: GRE Math Challenge #1-x is an integer, and 169 < x^2 < 324   [#permalink] 20 Dec 2017, 06:21
Display posts from previous: Sort by