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 Author: Bunuel [ 29 Nov 2018, 01:26 ] Post subject: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33M36-125

 Author: Bunuel [ 16 Nov 2021, 03:42 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33M36-125Official 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

 Author: DavidTutorexamPAL [ 29 Nov 2018, 01:30 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33For 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.

 Author: Archit3110 [ 29 Nov 2018, 03:00 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33For X(y+3) to be odd both x & y+3 have to be odd1 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 alwayssufficientfrom 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..

 Author: Archit3110 [ 29 Nov 2018, 03:02 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 DavidTutorexamPAL wrote:Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33For 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 informationInsufficient.(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...

 Author: dollytaneja51 [ 29 Nov 2018, 03:11 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Statement 1: x<3Which means x= 2 therefore, 2(y+3) is evenSufficientStatement 2: y>33y can be 37, 41, 43 .... which means x(even) = evenSufficientD is the answerPosted from my mobile device

 Author: DavidTutorexamPAL [ 29 Nov 2018, 03:41 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Archit3110 wrote:DavidTutorexamPAL wrote:Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33For 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 informationInsufficient.(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!

 Author: KSBGC [ 29 Nov 2018, 05:19 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33x 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.

 Author: kylebecker9 [ 29 Nov 2018, 08:25 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33By 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 oddS2: y+3 will be even. Sufficient to say that both x and y+3 are NOT oddAnswer D

 Author: Bunuel [ 24 Dec 2018, 00:35 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33

 Author: Kinshook [ 08 Oct 2019, 08:44 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33Asked: If x and y are prime numbers, is x(y + 3) odd?(1) x < 3x = 2x(y+3) = evenSUFFICIENT(2) y > 33y is odd; y+3 = evenx(y+3) = evenSUFFICIENTIMO D

 Author: exc4libur [ 18 Oct 2019, 09:50 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 Bunuel wrote:If x and y are prime numbers, is x(y + 3) odd?(1) x < 3(2) y > 33x,y=e,o;e,e;o,o=ie.2,3;2,2;3,3(1) x < 3: 0 33: y≠even=odd… x(odd+3)=x(even)=even, sufic.Answer (D)

 Author: bumpbot [ 24 Nov 2022, 02:12 ] Post subject: Re: If x and y are prime numbers, is x(y + 3) odd? (1) x < 3 (2) y > 33 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.

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