
Champernowne's constant
Problem 40
Published on Friday, 28th March 2003, 06:00 pm; Solved by 36612An irrational decimal fraction is created by concatenating the positive integers:
0.123456789101112131415161718192021...
It can be seen that the 12th digit of the fractional part is 1.
If dn represents the nth digit of the fractional part, find the value of the following expression.
d1
d10
d100
d1000
d10000
d100000
d1000000