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17 Mar 2022, 01:30
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
69% (01:24) correct
31%
(01:58)
wrong
based on 218
sessions
History
Date
Time
Result
Not Attempted Yet
Is the integer n odd?
(1) n^2 - 2n is not a multiple of 4.
(2) n is a multiple of 3.
(1) n^2 - 2n is not a multiple of 4.
(2) n is a multiple of 3.
17 Mar 2022, 01:49
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Bunuel
Question: Is n odd?
Statement 1:n^2 - 2n is not a multiple of 4.
n^2 - 2n =n*(n-2)
n and n-2 should both be either Consecutive Even integers or Consecutive ODD integers
If they were consecutive Even integers then n*(n-2) musthave been divisible by 4
Since n*(n-2) is NOT divisible by 4 therefore n and n-2 both MUST BE ODD INTEGERS
answer to the question is Definitely NO hence
SUFFICIENT
Statement 2: n is a multiple of 3.
i.e.n may be 3 (odd) or 6 ( even) hence
NOT SUFFICIENT
ANSWER: OPTION A
04 May 2022, 11:53
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for statement 1 : n could be equal to 2 so n x (n-2) is not divisible by 4 and yet n is not odd.
statements 1 + 2 : n is definitely odd hence I believe it should be C.
statements 1 + 2 : n is definitely odd hence I believe it should be C.
