Question

Fill in the blanks:

If the sum of digits of a number is divisible by ………… , then it is divisible by $9$.

Answer 1

If the sum of digits of a number is divisible by $9$ , then it is divisible by $9$.

Ex -: $198$,

Since, in $198$, sum of all digits $1+9+8=18$ which is divisible by $9$.

So we can say that $198$is also divisible by $9.$