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
.