Question

Using divisibility test determine which of the following numbers are divisible by 11
$70169308$

Answer 1

$70169308:-$
Sum of the given digits at odd places = $8+3+6+0=17$
Sum of the given digits at even place= $0+9+1+7=17$
Difference= $17-17=0$
As the difference between the sum of the digits at odd places and the sum of the digits at even place is $0$.
Therefore, $70169308$ is divisible by $11$.