What is the cantor expansion of: A. 2 B. 7 C. 19 D. 87 E. 1000 F. 1,000,000 The algorithm to solve these small problems is the most difficult for me. The algorithm that I came up with states: Asub(n) N! + Asub(n-1) (n-1)! +....+ Asub(2)2! + Asub(1)1!, where Asub1 is an integer with 0 <= Asubi <= i for i = 1,2,....n, I have tried to find other information on google, and have failed. It seems there is not much help with cantor expressions. So any help would be grateful!