If A=12538×2114, how many digits does ‘A’ have?
I have a number of the form abcd. How many digits does it have?
If a 3 digit number 'abc' has 3 factors, how many factors does the 6-digit number 'abcabc' have?
A librarian used 2893 digits to number the pages of a book. How many pages does the book have?