In most Poker variants, such as Texas Hold 'Em and Omaha, there are 5 shared cards, or community cards dealt. This is simply because the rules are as such.
There are other variants of poker, such as 7 Card Stud (Every player first receives 2 cards face down, 1 face up. Then they receive another 3 cards face up, each card followed by a round of betting, and a 7th card face down followed by another round of betting.) or 5 Card Draw (Every player receives 5 face down cards, followed by a round of betting. Then a player can choose to "throw cards away" and draw other cards. The ammount of cards that can be drawn is the same as the cards you threw away. So 1 card thrown away, means you can draw 1 new card. There are variants which allow up to 3 draws. In this variant there are no shared - or community - cards dealt.)
A flush in poker requires 5 cards of the same suit. Therefore, you would need 5 cards to form a flush in a standard poker hand.
Yes, a straight in poker must be made up of 5 cards in sequential order, regardless of the suit.
No, a straight in poker is a hand that consists of five cards in a sequence, regardless of the number of cards.
Yes, in poker, a sequence of cards from ace through 5 is considered a straight.
A flush in a standard poker hand requires 5 cards of the same suit.
No, in poker, a hand consists of 5 cards. Three pairs do not make a valid hand in poker.
No, a 2, 3, 4, 5 is not a straight in poker. In poker, a straight is a hand with five consecutive cards in numerical order.
I don't know what the probability of getting 5 of a kind using 106 cards is, however I do know that you cannot play poker with that many cards. Only 52 cards are ever used in poker, home games of course allow for the use of a joker in certain games.
5 Cards in a Poker Hand
Yes, poker cards and playing cards are the same thing. They are a standard deck of 52 cards used for various card games, including poker.
No
Community cards in poker are significant because they are shared by all players and can be used by everyone to make their best hand. This adds an element of strategy and uncertainty to the game, as players must use their own cards in combination with the community cards to determine the strength of their hand and make decisions on how to bet.