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04 Nov 2020, 05:15
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
81% (00:43) correct
19%
(00:32)
wrong
based on 53
sessions
History
Date
Time
Result
Not Attempted Yet
Is the product of two numbers x and y a prime number?
(1) x is even
(2) y is odd
(1) x is even
(2) y is odd
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
firas92
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Joined: 16 Jan 2019
Last visit: 24 Jul 2026
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Concentration: General Management
Schools: Tepper '23 (M$) Foster '23 (D)
GMAT 1: 740 Q50 V40
WE:Sales (Other)
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04 Nov 2020, 05:32
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(1) x is even
If x=4, y=1, xy is not prime
If x=2, y=1, xy is prime
1 is not sufficient
(2) y is odd
If x=4, y=1, xy is not prime
If x=2, y=1, xy is prime
2 is not sufficient
(1)+(2)
If x=4, y=1, xy is not prime
If x=2, y=1, xy is prime
(1)+(2) is not sufficient
Answer is E
Posted from my mobile device
If x=4, y=1, xy is not prime
If x=2, y=1, xy is prime
1 is not sufficient
(2) y is odd
If x=4, y=1, xy is not prime
If x=2, y=1, xy is prime
2 is not sufficient
(1)+(2)
If x=4, y=1, xy is not prime
If x=2, y=1, xy is prime
(1)+(2) is not sufficient
Answer is E
Posted from my mobile device
04 Nov 2020, 09:19
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Bunuel
#1
x is even
y not known insufficient
#2
y is odd
x is not known insufficien
from 1 &2
x2 & y 1
or x2 and y 3
we get yes and no
insufficient
option E
