Not sure what the question means.
192 digits can be one very large number or 192 individual integers [0, 1, 2, 3, 4, 5, 6, 7, 8 or 9].
If the digits are all different then 18. Otherwise, 192.
There are 192.
-99
192 digits
192, including ones containing repeat digits.
192 ways
192
101
10 digits are numbers in the billions.
there are 899 whole numbers that have three digits.
525
There are 5 numbers of 1 digit, 25 numbers of 2 digits, and 75 numbers of 3 digits. This makes 105 numbers in all.