Question

What least number should be subtracted from $26492518$ so that the resulting number is divisible by $3$ but not by $9$?

• A. $1$
• B. $3$
• C. $4$
• D. $7$

Answer 1

The correct option is C $4$

Sum of the digits of $26492518=37$
If $1$ is subtracted, then the sum of the digits $=36$,

which is divisible by both $3$ and $9$.
If $4$ is subtracted, then the sum of the digits $=33$,

which is divisible by $3$ but not by $9$.

So, option C is correct.