Question

Fill in the blanks
The smallest digit that can be put in the units place of $37842$, so that it is divisible by $6$ is _____.

Answer 1

$\begin{array}{c}37842x\\ since=3+7+8+4+2+x=30\\ 24+x\\ xshouldbe6\end{array}$

to be divisible by 6 it should be divisible by 2 and 3