10 digits are numbers in the billions.
there are 899 whole numbers that have three digits.
99999
two
There are 5 numbers of 1 digit, 25 numbers of 2 digits, and 75 numbers of 3 digits. This makes 105 numbers in all.
10 digits are numbers in the billions.
there are 899 whole numbers that have three digits.
Thirteen.
525
-99
99999
two
There are 5 numbers of 1 digit, 25 numbers of 2 digits, and 75 numbers of 3 digits. This makes 105 numbers in all.
how many numbers exactly have 4 digits ? 8900, 8999, 9000, 9999
17 digits
There are 5*4*3 = 60 such numbers.
With 123 digits you can make 123 one-digit numbers.