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05 Jul 2021, 09:51
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B
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% (00:52) correct
19%
(00:54)
wrong
based on 90
sessions
History
Date
Time
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Is 12 a factor of n?
(1) n is a factor of 360
(2) 24 is a factor of n
(1) n is a factor of 360
(2) 24 is a factor of n
05 Jul 2021, 10:32
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B alone.
1) is insufficient because n could be 2, in which case 12 would not be a factor. n could also be 60 (or 120..etc) in which case 12 would be a factor.
2) 24 is a factor of n, thus any factor of 24 (24, 12, 8, 6, 4, 2, 1) is also a factor of n.
Are you sure this is a 600-700 level question? This feels like a sub-600 q.
1) is insufficient because n could be 2, in which case 12 would not be a factor. n could also be 60 (or 120..etc) in which case 12 would be a factor.
2) 24 is a factor of n, thus any factor of 24 (24, 12, 8, 6, 4, 2, 1) is also a factor of n.
Are you sure this is a 600-700 level question? This feels like a sub-600 q.
05 Jul 2021, 13:04
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Asked: Is 12 a factor of n?
(1) n is a factor of 360
360 = 2^3*3^2*5
If n = 2; 12 is NOT a factor of n
But if n=24; 12 is a factor of n
NOT SUFFICIENT
(2) 24 is a factor of n
24 = 2*12;
If 24 is a factor of n, 12 is a factor of n
SUFFICIENT
IMO B
(1) n is a factor of 360
360 = 2^3*3^2*5
If n = 2; 12 is NOT a factor of n
But if n=24; 12 is a factor of n
NOT SUFFICIENT
(2) 24 is a factor of n
24 = 2*12;
If 24 is a factor of n, 12 is a factor of n
SUFFICIENT
IMO B
