Poker : Hands Strenght

Poker is one of the most famous gambling games on earth.
Here is the strenght of each hand from weakest to strongest :
1. High hand - one high card only

2. A pair - two cards of the same kind

3. Two pairs - 2 x two cards of the same kind

4. Tree of a kind - tree cards of the same kind

5. Straight - 5 consecutive cards

6. Flush - five cards of the same color

7. Full House - tree of a kind + a pair

8. Four of a kind - four cards of the same kind

9. Straight Flush - 5 consecutive cards of the same color

//10. Royal Flush - the strongest hand in game - 10, J, Q, K, A of the same color//

The probability of getting the strongest combinations are quite low though :
The chance of getting a royal flush is 1/649,740
The chance of getting a straight flush is 1/64,974
and so on...