Took a few minutes off work to look at the Ohio Lot O'Play, since there's been so much rumbling and grumbling about it. There are some truly massive numbers involved here. I haven't had the time to do a complete workup and won't for quite a while, so all the numbers here are approximate.
Each ticket has five rows of five numbers from 00 to 99. There are no duplicate numbers on a ticket.
Each player can pick the five numbers in the first row only. The other 20 numbers in the other four rows are quick-pick only.
Number of possibilities for 25 numbers drawn from 100: 3,761,767,332,270,610,000,000,000,000,000,000,000,000,000,000,000, in specific order. This is the number of different tickets possible in the game.
Number of ways to arrange any 25 given numbers on a ticket: 15,511,210,043,331,000,000,000,000.
On a specific ticket there are 12 different jackpot possibilities - each row, each column and each diagonal, and each number in that row, column or diagonal must be the same as five of the 25 numbers drawn to win. When I do the complete workup I'll have the odds, but it looks like the Ohio Lottery's quoted 1::6,200,000 odds would be close.
More as time allows.