Oh, what a delightful question! Let's imagine each page as a little canvas waiting to be painted. If we consider each page number, we find the digit 5 appears 100 times from 1 to 600. And if we include the actual content of the book, well, that would require a bit more counting, but it's all part of the happy little journey of discovery, isn't it?
A total of 44 times.
300 times.
As a digit in other numbers it appears 20 times
Infinitely many.
Zero. Only the digits 5 and 0 appear in 500.
A total of 44 times.
200
200
16
19 times.
11 times
11 times
300 times.
300
As a digit in other numbers it appears 20 times
10 times for the one's digit, 1-100 10 times for the ten's digit, 60-70 = 20 times
Infinitely many.