How many digits are required to number a book containing 220 pages? Select the correct option.
A) 674  B) 604  C) 552  D) 372  E) 250

Rationale: "9 pages from 1 to 9 will require 9 digits . 90 pages from 10 to 99 will require 90 * 2 = 180 digits . 220 - ( 90 + 9 ) = 121 pages will require 121 * 3 = 363 digits . the total number of digits is 9 + 180 + 363 = 552 . the answer is c ."
Answer: C