How many times does the digit 9 appear in the list of all integers from 1 - 500?

I dont think this requires a detailed explanation. The answer is 95.

The digit 9 appears 100 times between 1 and 500 (counting duplicates such as 99).

How many times does the digit 9 appear in the list of all integers from 1 - 500?

9 cannot be in the first postion.

2nd position but not third

5*1*9=45

3rd position but not second

5*9*1=45

2nd and third position

5*1*1=5   2 each so that is 10

45+45+10=100