Question

Replace by the smallest digit us so that 67. 19 is divisible by 9

Answer 1

Answer:

we know a number is divisible by 9, if sum of digits is divisible by 9.

Let the missing digit be x.

So

6 + 7 + x + 1 + 9 = multiple of 9

23 + x = 9 or 18 or 27 ...

so it means

23 + x = 27

x = 4

Answer 2

Answer:

this is correct...........................