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If x and y are two distinct prime numbers, Is x even?

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If x and y are two distinct prime numbers, Is x even?  [#permalink]

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New post Updated on: 31 Dec 2018, 00:35
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Difficulty:

  35% (medium)

Question Stats:

69% (00:20) correct 31% (00:27) wrong based on 26 sessions

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If x and y are two distinct prime numbers, Is x even?


(1) x + y = odd

(2) xy = even

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Originally posted by fitzpratik on 28 Dec 2018, 21:58.
Last edited by Bunuel on 31 Dec 2018, 00:35, edited 1 time in total.
Renamed the topic and edited the question.
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Re: If x and y are two distinct prime numbers, Is x even?  [#permalink]

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New post 28 Dec 2018, 22:12
fitzpratik wrote:
If x and y are two distinct prime numbers, Is x even?

A. x+y=odd

B. xy = even


Statement I tells you that one of X and y is even and the other is odd..
Same can be inferred from statement II..

Combined too, we just know one is even and the other odd..
But we don't know which is even and which is odd..

E
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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


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Re: If x and y are two distinct prime numbers, Is x even?  [#permalink]

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New post 28 Dec 2018, 23:27
fitzpratik wrote:
If x and y are two distinct prime numbers, Is x even?

A. x+y=odd

B. xy = even



#1:
either of x or y could be 2,3 so insufficient

#2:
either of x or y could be 2,3 so insufficient

combining 1&2 wont give any distinct value of x as well

IMO E
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Re: If x and y are two distinct prime numbers, Is x even? &nbs [#permalink] 28 Dec 2018, 23:27
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If x and y are two distinct prime numbers, Is x even?

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