Question
Using divisibility test, determine which of the following numbers are divisible by $4$?
$a.\ 4096$
$b.\ 21084$
$c.\ 31795012$
$a.\ 4096$
$b.\ 21084$
$c.\ 31795012$
✓
Answer
We know that, the number is divisible by $4,$ if its last two digits or digits at ten’s and one’s place is divisible by $4.$
$a.\ $We have, $4096 .$
$4096$ is divisible by $4$.
Since, its last two digits i.e. $96$ is divisible by $4.$
$b.\ $We have, $21084$
$21084$ is divisible by $4.$
Since, its last two digits i.e. $84$ is divisible by $4.$
$c.\ $We have, $31795012$
$31795012$ is divisible by $4.$
Since, its last two digits i.e. $12$ is divisible by $4.$
$a.\ $We have, $4096 .$
$4096$ is divisible by $4$.
Since, its last two digits i.e. $96$ is divisible by $4.$
$b.\ $We have, $21084$
$21084$ is divisible by $4.$
Since, its last two digits i.e. $84$ is divisible by $4.$
$c.\ $We have, $31795012$
$31795012$ is divisible by $4.$
Since, its last two digits i.e. $12$ is divisible by $4.$
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