Mar 27 03:00 PM PDT  04:00 PM PDT Join a free live webinar and learn the winning strategy for a 700+ score on GMAT & the perfect application. Save your spot today! Wednesday, March 27th at 3 pm PST Mar 29 06:00 PM PDT  07:00 PM PDT Join a FREE 1day workshop and learn how to ace the GMAT while keeping your fulltime job. Limited for the first 99 registrants. Mar 29 10:00 PM PDT  11:00 PM PDT Right now, their GMAT prep, GRE prep, and MBA admissions consulting services are up to $1,100 off. GMAT (Save up to $261): SPRINGEXTRAGMAT GRE Prep (Save up to $149): SPRINGEXTRAGRE MBA (Save up to $1,240): SPRINGEXTRAMBA Mar 30 07:00 AM PDT  09:00 AM PDT Attend this webinar and master GMAT SC in 10 days by learning how meaning and logic can help you tackle 700+ level SC questions with ease. Mar 31 07:00 AM PDT  09:00 AM PDT Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes.
Author 
Message 
TAGS:

Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 53831

If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33
[#permalink]
Show Tags
29 Nov 2018, 02:26
Question Stats:
56% (01:16) correct 44% (01:04) wrong based on 100 sessions
HideShow timer Statistics
If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33
Official Answer and Stats are available only to registered users. Register/ Login.
_________________



examPAL Representative
Joined: 07 Dec 2017
Posts: 912

If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33
[#permalink]
Show Tags
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.
_________________



SVP
Joined: 18 Aug 2017
Posts: 2497
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)

Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33
[#permalink]
Show Tags
29 Nov 2018, 04:00
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..
_________________
If you liked my solution then please give Kudos. Kudos encourage active discussions.



SVP
Joined: 18 Aug 2017
Posts: 2497
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)

Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33
[#permalink]
Show Tags
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...
_________________
If you liked my solution then please give Kudos. Kudos encourage active discussions.



Manager
Joined: 26 Feb 2017
Posts: 89
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]
Show Tags
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



examPAL Representative
Joined: 07 Dec 2017
Posts: 912

Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33
[#permalink]
Show Tags
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!
_________________



VP
Joined: 31 Oct 2013
Posts: 1273
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]
Show Tags
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.



Intern
Joined: 05 Oct 2018
Posts: 40
Location: United States
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]
Show Tags
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



Math Expert
Joined: 02 Sep 2009
Posts: 53831

Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33
[#permalink]
Show Tags
24 Dec 2018, 01:35
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
_________________




Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33
[#permalink]
24 Dec 2018, 01:35






