Question

Using the divisibility test determine which of the following numbers are divisible by 11
$7138965$

Answer 1

$7138965:-$
Sum of the given digits at odd places = $5+9+3+7=24$
Sum of the given digits at even place= $6+8+1=15.$
Difference= $24-15=9$
The difference between the sum of the digits at odd places and sum of the digits at even place is $9$.Which is not divisible by $11$.
$\therefore 7138965$ is not divisible by $11$.