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Difficulty:
25%
(medium)
Question Stats:
68% (01:13) correct
32%
(01:16)
wrong
based on 281
sessions
History
Date
Time
Result
Not Attempted Yet
If a and b are positive integers, is ab odd?
(1) a + b is odd.
(2) a^b is even.
_________________
(1) a + b is odd.
(2) a^b is even.
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
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If a and b are positive integers, is ab odd?
(1) a + b is odd.
a+b as odd is possible ONLY when one of them is positive and other negative.
if any of a and b is even, ab will be even..
sufficient
(2) a^b is even.
this means a is even
ab will be even
sufficient
D
_________________
(1) a + b is odd.
a+b as odd is possible ONLY when one of them is positive and other negative.
if any of a and b is even, ab will be even..
sufficient
(2) a^b is even.
this means a is even
ab will be even
sufficient
D
_________________
Bunuel
Answer is D
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