Question

Check whether $3216345$ is divisible by $11$or not.

Answer 1

Solving by using divisibility rule of 11 :

Divisibility rule of $11$ $\Rightarrow$ Sum of digits at odd place $-$ Sum of digits at even place $=$$0$ 0r Multiple of $11$ i.e. $11,22,33,.........$

For $3216345$

$\begin{array}{rcl}Sumofdigitsatoddplace& =& 5+3+1+3\\ & =& 12\end{array}$

$\begin{array}{rcl}Sumofdigitsatevenplace& =& 4+6+2\\ & =& 12\end{array}$

Sum of digits at odd place $-$Sum of digits at even place $=$$12-12$

$=0$

Hence, $3216345$ is divisible by $11$.