BrainLab wrote:
Is rw = 0?
(1) −6 < r < 5
(2) 6 < w < 10
Source: [OG 2016]
Asked: Is rw = 0?
(1) −6 < r < 5
If r=0 => rw=0 otherwise rw<>0
NOT SUFFICIENT
(2) 6 < w < 10
Since w<>0 => If r=0 => rw=0 otherwise rw<>0
NOT SUFFICIENT
Combing (1) & (2)
(1) −6 < r < 5
(2) 6 < w < 10
If r=0 => rw=0 otherwise rw<>0
NOT SUFFICIENT
IMO E
