Question

If $34\ast 68$ is to be divisible by $9$, then what is the value of the missing digit?

• A. $5$
• B. $6$
• C. $9$
• D. $8$

Answer 1

Answer: (B)

$6$

$34\ast 68$ will be divisible by $9$ if the sum of its digits is divisible by $9$
Sum of digits $=3+4+\ast +6+8=21+\ast$
$21+\ast$ should be equal to $27$ to make it divisible by $9$
$\therefore$ $\ast =6$