Question: How many three digit numbers that do not contain the digit 2 are there?
Options:
(A) 100
(B) 200
(C) 512
(D) 648
(E) 729 Random thoughts:
8*9*9 = 648: 8 options for the first digit (no 0, no 2) and 9 options for each of the remaining digits (no 2 there). The final answer: (D).