statement 1
1/(k-1) > 0
k > 0
1/k > 0 will always be true.
statement 2
1/(k+1) > 0
k > -1
for -1>k>0
1/k >0 is false
for k>0
1/k >0 is true
Hence statement 1 alone is sufficient.
Option A
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Source: Beat The GMAT — Data Sufficiency |
