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14 Mar 2017, 03:05
Kudos
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
57% (01:49) correct
43%
(01:51)
wrong
based on 115
sessions
History
Date
Time
Result
Not Attempted Yet
If –5 < k < 5, is k > 2 ?
(1) (k – 1)(k – 5)(k – 2) < 0
(2) k – 1 > 0
(1) (k – 1)(k – 5)(k – 2) < 0
(2) k – 1 > 0
14 Mar 2017, 07:40
Kudos
Bookmarks
Bunuel
(1) (k – 1)(k – 5)(k – 2) < 0
means either k<1 or 2<k<5
insuff
(2) k>1
clearly insuff
k can be 3 or 1.5
insuff
combined
k<1 or 2<k<5 from (1)
also k>1 (from 2)
thus 2<k<5 only left out
so k>2
suff
Ans C
14 Mar 2017, 07:51
Kudos
Bookmarks
Ste 1: This implies that any one of (k-1)(k-5)(k-2) is negative or all three are negative .then only (k-1)(k-5)(k-2) <0
not sufficient.
Ste 2 : Implies K>1 Not suff
Combining both
(k-1) will be greater than 0
and if (k-2) is negative (k-5 ) will also be negative ,which is not possible. therefor k>2
not sufficient.
Ste 2 : Implies K>1 Not suff
Combining both
(k-1) will be greater than 0
and if (k-2) is negative (k-5 ) will also be negative ,which is not possible. therefor k>2
