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18 May 2022, 01:31
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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:
25%
(medium)
Question Stats:
80% (01:35) correct
20%
(01:11)
wrong
based on 40
sessions
History
Date
Time
Result
Not Attempted Yet
If \(m\) and \(n\) are positive integers, then is \(m + 2n\) an even integer?
(1) \(m = 3n + 1\)
(2) Exactly one of the two numbers \(m\) and \(n\) is even.
(1) \(m = 3n + 1\)
(2) Exactly one of the two numbers \(m\) and \(n\) is even.
18 May 2022, 02:27
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(1) Only
If n=2, then m=7 => m+2n is odd
If n=1, then m=4 => m+2n is even
Insufficient
(2)Only
See above.
Insufficient
(1)(2)Only
Insufficient
The answer is thus (E).
If n=2, then m=7 => m+2n is odd
If n=1, then m=4 => m+2n is even
Insufficient
(2)Only
See above.
Insufficient
(1)(2)Only
Insufficient
The answer is thus (E).
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