You should change "1 Rare Voting Key: 3-6 diamonds", to "1 Rare Voting Key: 1-2 diamonds", in my opinion.
"For each attempt, you have a 1% chance that you'll win and a 99% chance that you will fail. If you do N attempts, the chance of failing every single one would be .99N (with 1.0 being a 100% chance). Thus the chance to win at least once would be 1.0 - .99N. You'll notice this number grows as N increases but it never reaches 1.0. So after 100 tries, you have a 1.0-.99100 = 1.0-.366 = .634 = 63.4% chance of at least one win."