Bunuel
Allison is a university student who enjoys playing tennis. Does Allison play tennis at least once each week?
(1) If Allison is not required to attend a physics lecture on Wednesday during a certain week, Allison always plays tennis on Wednesday of that week.
(2) If Allison is required to attend a physics lecture on Wednesday during a certain week, Allison always plays tennis on Friday of that week.
(1) If Allison is not required to attend a physics lecture on Wednesday during a certain week, Allison always plays tennis on Wednesday of that week.We do not know what will happen in case she is required to attend the Physics lecture.
INSUFF.(2) If Allison is required to attend a physics lecture on Wednesday during a certain week, Allison always plays tennis on Friday of that week.We do not know what will happen in case she is
NOT required to attend the Physics lecture.
INSUFF.1+2
There can be only two cases with regard to attending physics lecture.
Either she will attend physics lecture or she will not attend physics lecture . In either case she will play tennis that week.
SUFF.ANS C
Hope it helped.