Question

What must be added to $315642$ so that it becomes a multiple of $11$?

Answer 1

Consider the given number is $315642$

We know that, the divisibility rule of $11$

$(3+5+4)-(1+6+2)=3$

If, we add $3$ in the given number then it is divisible by $11$.

Now, new number is $315642+3=315645$

$(3+5+4)-(1+6+5)=0$

Hence, $3$ is to be added in the given number.