Question

Using divisibility test, determine $5445$ is divisible by $11$.

Answer 1

The rule for the divisibility of $11$ states that if the difference between the sums of the alternate digits of the given number is either 0 or divisible

by $11$, then the number is divisible by $11$.

The sum of alternative digit in $5445$ are $5+4=9and5+4=9$

The difference between two are: $9-9=0$

Hence, $5445$ is divisible by $11$.