Question

What is the missing digit which makes the number $2345$_ exactly divisible by $6$?

• A. $2$
• B. $3$
• C. $4$
• D. $5$

Answer 1

Answer: (C)

$4$

We know the divisibility rule for $6$:
If the number is exactly divisible by both $2$ and $3$, then the given number is also divisible by $6$.
Here, $2+3+4+5=14$
So, $4$ is added to $14+4=18$
Hence, $23454$ is divisible by $6$, because the last digit ends with even no. and the number is multiple of $3$.

So, option C is correct.