Last visit was: 25 Apr 2026, 17:52 It is currently 25 Apr 2026, 17:52
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
Nikkb
User avatar
Current Student
Joined: 02 Jul 2017
Last visit: 08 Jan 2024
Posts: 226
Own Kudos:
318
 [7]
Given Kudos: 70
Concentration: Entrepreneurship, Technology
Schools: Tepper '20 (M$) McCombs '20 (A) Darden '20 (D) Haas '20 (D) Anderson '20 (D)
GMAT 1: 730 Q50 V38
Schools: Tepper '20 (M$) McCombs '20 (A) Darden '20 (D) Haas '20 (D) Anderson '20 (D)
GMAT 1: 730 Q50 V38
Posts: 226
Kudos: 318
 [7]
If x, y and z are positive single-digit integers and x^y = z. What is 19 Sep 2017, 02:16
Kudos
Add Kudos
7
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

55% (hard)

Question Stats:

53% (01:22) correct 47% (01:14) wrong based on 112 sessions

History

Date
Time
Result
Not Attempted Yet
If x, y and z are positive single-digit integers and \(x^y = z\). What is z?

(1) x and y even numbers
(2) x = y
ShowHide Answer
Official Answer
A
User avatar
Sasindran
User avatar
Joined: 17 Oct 2016
Last visit: 08 Jul 2023
Posts: 250
Own Kudos:
334
Given Kudos: 127
Location: India
Concentration: Operations, Strategy
GPA: 3.73
WE:Design (Real Estate)
Posts: 250
Kudos: 334
If x, y and z are positive single-digit integers and x^y = z. What is 19 Sep 2017, 02:20
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Option D

Based on statement 1 we can deduce x and y are 2.
Based on statement 2 we can conclude x and y are 2


Sent from my iPhone using GMAT Club Forum
User avatar
septwibowo
User avatar
Joined: 27 Dec 2016
Last visit: 05 Nov 2025
Posts: 189
Own Kudos:
196
Given Kudos: 285
Concentration: Marketing, Social Entrepreneurship
Schools: Yale '21 HBS '21 Darden '21 Wharton '21
GPA: 3.65
WE:Marketing (Education)
Products:
My Reviews
Schools: Yale '21 HBS '21 Darden '21 Wharton '21
Posts: 189
Kudos: 196
If x, y and z are positive single-digit integers and x^y = z. What is 19 Sep 2017, 02:52
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Nikkb
If x, y and z are positive single-digit integers and \(x^y = z\) . What is z?

(1) x and y even numbers
(2) x = y
Show more

Nikkb , I chose C because I thought that statement A is not sufficient,

\(Z\) can be 1 if \(x=4\) and \(y=0\)
\(Z\) can be 4 if \(x=2\) and \(y=2\).

Wdyt?

This one exploits our knowledge about an even and positive number. Is 0 positive even integer?
User avatar
Sasindran
User avatar
Joined: 17 Oct 2016
Last visit: 08 Jul 2023
Posts: 250
Own Kudos:
334
Given Kudos: 127
Location: India
Concentration: Operations, Strategy
GPA: 3.73
WE:Design (Real Estate)
Posts: 250
Kudos: 334
If x, y and z are positive single-digit integers and x^y = z. What is 19 Sep 2017, 02:56
Kudos
Add Kudos
Bookmarks
Bookmark this Post
septwibowo
Nikkb
If x, y and z are positive single-digit integers and \(x^y = z\) . What is z?

(1) x and y even numbers
(2) x = y

Nikkb , I chose C because I thought that statement A is not sufficient,

\(Z\) can be 1 if \(x=4\) and \(y=0\)
\(Z\) can be 4 if \(x=2\) and \(y=2\).

Wdyt?

This one exploits our knowledge about an even and positive number. Is 0 positive even integer?
Show more
−3 < −2 < −1 < 0 < 1 < 2 < 3 < … An integer is positive if it is greater than zero and negative if it is less than zero. Zero is defined as neither negative nor positive.


Sent from my iPhone using GMAT Club Forum mobile app
User avatar
Nikkb
User avatar
Current Student
Joined: 02 Jul 2017
Last visit: 08 Jan 2024
Posts: 226
Own Kudos:
318
Given Kudos: 70
Concentration: Entrepreneurship, Technology
Schools: Tepper '20 (M$) McCombs '20 (A) Darden '20 (D) Haas '20 (D) Anderson '20 (D)
GMAT 1: 730 Q50 V38
Schools: Tepper '20 (M$) McCombs '20 (A) Darden '20 (D) Haas '20 (D) Anderson '20 (D)
GMAT 1: 730 Q50 V38
Posts: 226
Kudos: 318
If x, y and z are positive single-digit integers and x^y = z. What is 19 Sep 2017, 03:58
Kudos
Add Kudos
Bookmarks
Bookmark this Post
septwibowo
Nikkb
If x, y and z are positive single-digit integers and \(x^y = z\) . What is z?

(1) x and y even numbers
(2) x = y

Nikkb , I chose C because I thought that statement A is not sufficient,

\(Z\) can be 1 if \(x=4\) and \(y=0\)
\(Z\) can be 4 if \(x=2\) and \(y=2\).

Wdyt?

This one exploits our knowledge about an even and positive number. Is 0 positive even integer?
Show more

Generally below 4 terms are used in question stem:

Positive number x => \(x>0\) =>All Numbers more than 0 but not equal to 0
Non-Negative number x => \(x\geq{0}\) =>All Numbers above 0 or equal to 0.
Negative number x => \(x<0\) =>All Numbers less than 0 but not equal to 0
Non-Positive number x => \(x\leq{0}\) =>All Numbers less than 0 or equal to 0.

even integers : ... -4,-2,0,2,4, ......
odd integers : ... -3,-1,1,3,......


So 0 is considered even integer but its neither positive nor negative.


Above question talks about "positive single digit integer" => Integers can be 1,2,3...,9 ... Value of integer cannot be equal to 0 here.

Hope this helps :)
User avatar
chetan2u
User avatar
GMAT Expert
Joined: 02 Aug 2009
Last visit: 25 Apr 2026
Posts: 11,229
Own Kudos:
45,020
Given Kudos: 335
Status:Math and DI Expert
Location: India
Concentration: Human Resources, General Management
GMAT Focus 1: 735 Q90 V89 DI81
Products:
My Reviews
Expert
Expert reply
GMAT Focus 1: 735 Q90 V89 DI81
Posts: 11,229
Kudos: 45,020
If x, y and z are positive single-digit integers and x^y = z. What is 19 Sep 2017, 04:12
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Nikkb
If x, y and z are positive single-digit integers and \(x^y = z\). What is z?

(1) x and y even numbers
(2) x = y
Show more


Hi...

x,y, and z are +ive single digits..

Let's see the statements
1) X and y are even numbers..
\(x^y=z\)..
So X and y can take values 2,4,6 or 8..
But z will be single digit when X and y are 2 each..
So z=2^2=4
Sufficient

2) x=y
Following possibilities..
\(1^2, 2^1, 2^2, 2^3, 3^1, 3^2,...\)
So z can be anything from 1 to 9
Insufficient

A
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,986
Own Kudos:
1,118
Posts: 38,986
Kudos: 1,118
If x, y and z are positive single-digit integers and x^y = z. What is 16 Aug 2024, 07:50
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
109830 posts
kingbucky
498 posts
Gmat860sanskar
212 posts