the total number of digits used in numbering the pages of a book having 366 pages is
"explanation : total number of digits = ( no . of digits in 1 - digit page nos . + no . of digits in 2 - digit page nos . + no . of digits in 3 - digit page nos . ) = ( 1 x 9 + 2 x 90 + 3 x 267 ) = ( 9 + 180 + 801 ) = 990 . answer : b"
subtract(subtract(multiply(366, const_3), subtract(const_100, const_1)), subtract(const_10, const_1))