Question

What is the missing digit which makes the number $122$_ exactly divisible by $2$?

• A. $2$
• B. $3$
• C. $1$
• D. $5$

Answer 1

The correct option is A $2$

We know the divisibility rule for $2$:
Always check the last digit end with $0,2,4,6$ or $8$
Here, $1222$ is exactly divisible by $2$ because the last digit is end with $2$.

So, option A is correct.