A book has N pages , numbered the usual way , from 1 to N . The total number of digits in the page numbers is 1,095 . How many pages does the book have ?
CRANIUM CHALLENGE
MAY CHALLENGE
A book has N pages , numbered the usual way , from 1 to N . The total number of digits in the page numbers is 1,095 . How many pages does the book have ?
Please send you answers to Thomas Selling via e-mail : thomasselling @ me . com Correct responses will be recognized in the future issues of the New Hampshire Civil Engineer .
APRIL SOLUTION
( 9999-999 )/ 9 + 999-9 + 9-9 ( 9999 / 9999 )+ 999 + 999-9 999999-9 +( 9999 / 9999 ) 999 + 999-9 +( 9 / 9 )+ 999-999 = 1990 ( 9999 / 9 ) - ( 999 / 9 )+( 999-9 )+( 9-9 )
CORRECT RESPONSE FROM : Jeff Lloyd , PE ( WSP )
7