Quiz nonsense: Missing States Plates?

[monster]

We went to Yellowstone and we noted which State Licence Plates we saw on private vehicles (i.e. not trucks or U-Haul vans -Hebe's rules). We also saw three U.S. licence plates on cars that did not belong to any of the 50 States. We saw 51 plates in total (52 on all vehicles -there was one plate we saw a lot, but only on trucks.)

Here's your challenge:

1) Which two states did we not see represented on private vehicles. You have to name both. (666 nerd points)

2) Which one of those did we see on a truck but not a private vehicle? (13 nerd points)

3) which three non-state US plates did we see? You don't have to name all three, we think there's one easy, one medium-easy and one hard. (13, 42 and 333 nerd points)

person with the most nerd points will win user title bragging rights.