1) 1/(k-1) >0 is possible only if k>1
for any value of k>1 ;1/k>0
this we can find by plugging some smallest even fractional -ve value for K
so suff.
2) if k=-1/2 then case is true but 1/k<0
and if k=1/2 then the given case is true but 1/k>0
so not suff.
so A is correct
DS Gmat prep 2 question Inqualities
This topic has expert replies
Source: Beat The GMAT — Data Sufficiency |
-
xcusemeplz2009
- Master | Next Rank: 500 Posts
- Posts: 399
- Joined: Wed Apr 15, 2009 3:48 am
- Location: india
- Thanked: 39 times













