Question

Fill in the blanks
The smallest digit by which $\ast$ should be replaced in $5095\ast 6$, so that it is divisible by $4$ is _____.

Answer 1

For a number to be divisible by $4$ last two digits of that number number should be divisible by $4$.

Since $16$ is divisible by $4$, smallest number by which $\ast$ can be replaced is $1$.