since 15 and 17 are both august, but bernard knows the date... they must be eliminated.
that leaves 16th of july
WHY? just because bernard knows the date, why does that mean it couldn’t be any of these three days?
HELP!!!
if bernard knows, then the numbers that are ambiguous must be removed.
the 14th can be either july or august... so remove it.
the 15th and 17th are both august... so remove it.
that leaves the 16th of july