NEW HERE? LEARN MORE
close
It is currently 22 Mar 2023, 18:30
Register
GMAT Club Tests
Decision Tracker
My Rewards
New posts
New comers' posts

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

If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33

13 posts Go to First Unread Post
Print view
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
SORT BY:
Date
Kudos
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 88702
CAT Tests Forum Quiz Mode Top Member of the Month
If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  29 Nov 2018, 02:26
6
Bookmarks
Expert Reply
Quiz Dashboard Attempt only this question Same topic and source Same topic and difficulty Same source and difficulty Random Chronological Reverse chronological Learn more
00:00
A
B
C
D
E

Difficulty:

45% (medium)

Question Stats:

59% (01:13) correct 41% (01:14) wrong based on 270 sessions

Hide Show timer Statistics

If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


M36-125
ShowHide Answer
Official Answer
Official Answer and Stats are available only to registered users. Register/Login.

_________________
New to the GMAT CLUB Forum?

My Signature Questions' Collection:


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
Quiz Dashboard Attempt only this question Same topic and source Same topic and difficulty Same source and difficulty Random Chronological Reverse chronological Learn more
Most Helpful Expert Reply
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 88702
CAT Tests Forum Quiz Mode Top Member of the Month
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  16 Nov 2021, 04:42
Expert Reply
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


M36-125


Official Solution:


If \(x\) and \(y\) are prime numbers, is \(x(y + 3)\) odd?

(1) \(x < 3\)

Since \(x\) is prime, then \(x=2\) and thus \(x(y + 3)=even*integer=even\). Sufficient.

(2) \(y > 33\)

Since \(y\) is prime, then \(y=odd\) and thus \(x(y + 3)=integer*even=even\). Sufficient.


Answer: D
_________________
New to the GMAT CLUB Forum?

My Signature Questions' Collection:


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
General Discussion
User avatar
P
DavidTutorexamPAL
examPAL Representative
Joined: 07 Dec 2017
Posts: 1061
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  Updated on: 29 Nov 2018, 04:42
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


For x(y+3) to be odd, both x and y+3 must be odd.
Then y must be even, and since y is prime only y = 2 works.
Then the question asks 'does y = 2 and does x not equal 2'?
We'll look for statements which provide this information, a Logical approach.

(1) tells us that x =2, so the answer is NO.
Sufficient.

(2) tells us that y is not equal to 2 so NO.
Sufficient.

(D) is our answer.
_________________

Sign up for 7-day free trial
Signature Read More

Originally posted by DavidTutorexamPAL on 29 Nov 2018, 02:30.
Last edited by DavidTutorexamPAL on 29 Nov 2018, 04:42, edited 3 times in total.
User avatar
L
Archit3110
GMAT Club Legend
GMAT Club Legend
Joined: 18 Aug 2017
Status:You learn more from failure than from success.
Posts: 7440
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE:Marketing (Energy and Utilities)
GMAT ToolKit User Reviews Badge
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  29 Nov 2018, 04:00
1
Kudos
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33



For X(y+3) to be odd both x & y+3 have to be odd

1 given x & y are prime numbers and x<3 so only possible value of x would be 2 so the expression x( y+3) will be even always

sufficient

from 2 y>33
here y would always be odd i.e 37,41 .. and y +3 would always be even so even so sufficient ..

IMO D should be correct..
User avatar
L
Archit3110
GMAT Club Legend
GMAT Club Legend
Joined: 18 Aug 2017
Status:You learn more from failure than from success.
Posts: 7440
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE:Marketing (Energy and Utilities)
GMAT ToolKit User Reviews Badge
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  29 Nov 2018, 04:02
DavidTutorexamPAL wrote:
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


For x(y+3) to be odd, both x and y+3 must be odd.
Then y must be even, and since y is prime only y = 2 works.
Then the question asks 'does y = 2'?
We'll look for statements which provide this information, a Logical approach.

(1) does not provide this information
Insufficient.

(2) tell us the answer is NO.
Sufficient.

(B) is our answer.


DavidTutorexamPAL
from 1 wont x be 2 as given in the statement is that both x & y are prime no. wont this make it sufficient...
User avatar
B
dollytaneja51
Manager
Manager
Joined: 26 Feb 2017
Posts: 72
Location: India
GPA: 3.99
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  29 Nov 2018, 04:11
Statement 1: x<3
Which means x= 2 therefore, 2(y+3) is even
Sufficient
Statement 2: y>33
y can be 37, 41, 43 .... which means x(even) = even
Sufficient

D is the answer

Posted from my mobile device
User avatar
P
DavidTutorexamPAL
examPAL Representative
Joined: 07 Dec 2017
Posts: 1061
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  29 Nov 2018, 04:41
Archit3110 wrote:
DavidTutorexamPAL wrote:
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


For x(y+3) to be odd, both x and y+3 must be odd.
Then y must be even, and since y is prime only y = 2 works.
Then the question asks 'does y = 2'?
We'll look for statements which provide this information, a Logical approach.

(1) does not provide this information
Insufficient.

(2) tell us the answer is NO.
Sufficient.

(B) is our answer.


DavidTutorexamPAL
from 1 wont x be 2 as given in the statement is that both x & y are prime no. wont this make it sufficient...


you're right!
my bad, fixed.
Thanks!
_________________

Sign up for 7-day free trial
Signature Read More
avatar
D
KSBGC
VP
VP
Joined: 31 Oct 2013
Posts: 1296
Concentration: Accounting, Finance
GPA: 3.68
WE:Analyst (Accounting)
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  29 Nov 2018, 06:19
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


x and y are primes.

Statement 1:

x<3. x=2. So the product will be even. Sufficient.

Statement 2;

y>33. only even prime is 2. all other primes are odd. 37 + 3 = 40 ( SUPPOSED). Now we don't have to know the value of x. even * odd/even = even. Sufficient.

The best answer is D.
avatar
B
kylebecker9
Intern
Intern
Joined: 05 Oct 2018
Posts: 36
Location: United States
Schools: Wharton Exec '21 (M)
GMAT 1: 770 Q49 V47
GPA: 3.95
WE:General Management (Other)
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  29 Nov 2018, 09:25
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33



By definition, prime numbers are greater than 1 with only 2 divisors. The question is whether both x and y+3 are odd or not.

S1: x = 2 Sufficient to say that both x and y+3 are NOT odd
S2: y+3 will be even. Sufficient to say that both x and y+3 are NOT odd

Answer D
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 88702
CAT Tests Forum Quiz Mode Top Member of the Month
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  24 Dec 2018, 01:35
Expert Reply
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


Par of GMAT CLUB'S New Year's Quantitative Challenge Set


_________________
New to the GMAT CLUB Forum?

My Signature Questions' Collection:


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics
Signature Read More
User avatar
L
Kinshook
GMAT Club Legend
GMAT Club Legend
Joined: 03 Jun 2019
Posts: 4987
Location: India
Schools: HBS '22 CBS '22 Wharton '22
GMAT 1: 690 Q50 V34
WE:Engineering (Transportation)
Reviews Badge
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  08 Oct 2019, 09:44
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


Asked: If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
x = 2
x(y+3) = even
SUFFICIENT

(2) y > 33
y is odd; y+3 = even
x(y+3) = even
SUFFICIENT

IMO D
_________________
Kinshook Chaturvedi
Email: kinshook.chaturvedi@gmail.com
Signature Read More
avatar
D
exc4libur
SVP
SVP
Joined: 24 Nov 2016
Posts: 1783
Location: United States
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  18 Oct 2019, 10:50
Bunuel wrote:
If x and y are prime numbers, is x(y + 3) odd?

(1) x < 3
(2) y > 33


x,y=e,o;e,e;o,o=ie.2,3;2,2;3,3

(1) x < 3: 0<x<3… x=2… even(y+3)=even, sufic.

(2) y > 33: y≠even=odd… x(odd+3)=x(even)=even, sufic.

Answer (D)
User avatar
bumpbot
Non-Human User
Joined: 09 Sep 2013
Posts: 27072
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink] New post  24 Nov 2022, 03:12
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources
Signature Read More
GMAT Club Bot
gmatclubot
Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 [#permalink]
24 Nov 2022, 03:12
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Moderators:
chetan2u
Math Expert
10532 posts
Bunuel
Math Expert
88702 posts

cron

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions