Using divisibility tests, determine the following number is divisible by $$4$$; by $$8$$.
$$12159$$.
$$12159$$ is not divisible by $$4$$ because the number formed by the last two digits $$(59)$$ is not divisible by $$4.$$
$$12159$$ is not divisible by $$8$$ because the number formed by the last three digits $$(159)$$ is not divisible by $$8$$.