You have 12 cards to start, so we get 12 cards.
I have never played Drunk Uno cards.
Unlike the other number cards, there is only one 'zero' card in each colour in an UNO deck, so there are 4 'zero' cards in total.
There are 52 cards in a full deck. There are four suits in the deck. There is one 2 in each suit, so there are four 2's in a pack of cards.
The directions for playing UNO can be found in the box where the cards are located. UNO is manufactured by Mattel so one could contact Mattel if the original directions have been lost.
106 - 24 hearts (red), 24 yellow, 24 green, 24 purple, 10 wild draw cards. Packs also come with 2 additional cards (listed on contents sheet) but these are printed on both sides with adverts for other UNO games so are of no use to the game.
There are 52 cards in a pack, 13 of each suit, so there are 13 diamonds in a suit.
Forgetting to say "uno" in a game of Uno can result in a penalty, such as having to draw additional cards. It is a rule in the game to announce "uno" when you have one card left, and failing to do so can lead to consequences set by the rules of the game.
There are 4 kings in a pack of 52 cards so the odds are 1:13 (4/52).
There is only one nine of spades in a standard deck of cards, so in probability, that would be 1/52
If you say "uno" before the other person in a game of Uno, you must announce it to avoid a penalty. If you fail to do so and are caught by another player, you may have to draw additional cards as a penalty.
Every Booster Pack contains its own rare Pokemon Cards that are original to the Booster Pack, so every Booster Pack contains rare cards. *edit* If you're lucky, your reverse holo (or what some people call "shiny") card might also be a rare, so you can get one or two rares in one pack.