95
1 digit number: only 1 number 2 digits number: 18 numbers 3 digits number: 76 So there are 95 numbers containing 9.
500 or so.
500/10 = 50 times.
625 if numbers can have leading 0s, 500 otherwise.
200
200
95
200
1 digit number: only 1 number 2 digits number: 18 numbers 3 digits number: 76 So there are 95 numbers containing 9.
900
200
The 3 digit numbers under 500 are 100 through 499.
500
500 or so.
If you include the number 3,000, there are exactly 2,001 4-digit numbers between 500 and 3000.
400 of them.