Answer:
Digit 8 makes 3_43 divisible by 9
Explanation:
We have to find a number that will make 3_43 divisible by 9.
In order for a number to be divisible by 9, the sum of digits of a number should add up to 9 or any multiple of 9.
The given digits add up to
3+4+3 = 10
We can add 8 which will make the sum of digits 18 (a multiple of 9)
The number we will get is 3843 which is divisible by 9 and gives 427 as quotient.
So, digit 8 makes 3_43 divisible by 9 ..