Question 28
If the answer is not an integer, give the nearest integer. If the calculated answer has more than five digits, give its last five digits.
When writing the integers 1 to 20 as 1, 2, 3, …, 20, the digit 1 occurs 12 times (11 contributes twice). How many times does the digit 1 occur when writing all integers from 1 through 231?
When writing the integers 1 to 20 as 1, 2, 3, …, 20, the digit 1 occurs 12 times (11 contributes twice). How many times does the digit 1 occur when writing all integers from 1 through 231?