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20 May 2022, 07:41
Kudos
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
69% (02:05) correct
31%
(01:58)
wrong
based on 95
sessions
History
Date
Time
Result
Not Attempted Yet
If x and y are positive integers, is \(4x^2 + xy + y^3\) even?
(1) x – y = 5
(2) y is a prime number greater than 17.
(1) x – y = 5
(2) y is a prime number greater than 17.
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
20 May 2022, 08:36
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Bunuel
target is \(4x^2 + xy + y^3\) even
#1
x – y = 5
possible when either of x or y is even and odd
insufficient to say that target is yes because if y is even then we get yes and if y is odd then we get no
insufficient
#2y is a prime number greater than 17
y is odd
x is not known
from 1 &2
y is odd so x will be even
therefore
target is not even
sufficient
option C
21 May 2022, 05:58
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Bunuel
I took 65 seconds
option C is right
as 1 does tell us whether X or Y is odd
2 tell us Y is odd so X must be even combing both
So C is Answere
