What least value must be assigned to so that the number 197 5462 is r 9 ?
Let the missing digit be x.
Sum of digits = (1 + 9 + 7 + x + 5 + 4 + 6 + 2) = (34 + x).
For (34 + x) to be divisible by 9, x must be replaced by 2 .
Hence, the digit in place of * must be 2.
