If a numbers is divisible by
, it is divisible by 
Hypothesis: If a numbers is divisible by
.
The hypothesis is true.
\Conclusion: then it is divisible by
.
The conclusion is not true.
\The statement is false.
\Counterexample:
\
is divisible by
, but not divisible by
.
The statement is false.
\
is divisible by
, but not divisible by
.