In a standard 5-card poker hand for 1 deck:
Calculate P(Straight)
Straight Hands
Calculate Total 5 Card hands
Choose 5 cards from 52 cards
Total Hands = | 52! |
| (52-5)! * 5! |
Total Hands = | 52! |
| 47! * 5! |
Total Hands = | (52 * 51 * 50 * 49 * 48) * 47! |
| 47! * (5 * 4 * 3 * 2 * 1) |
Cancelling the 47!, we get:
Total Hands = | 311,875,200 |
| 120 |
Total Hands = 2,598,960
Build Probability
Possible straights = Possible ways to get 5 cards in a row starting with A-9 card
Possible 5 card straight combos starting with A-9 card = 10 ways for a straight that starts with A-9 card
4 possible suits raised to (5 cards in a row) = 45 = 1,024 ways
Possible 5 card straight * possible suit (combos) = 10 * 1024 = 10,240
Possible straights - (36 straight + 4 Royal {Flushes}) = 10,240 - 40
Possible straights = 10200
Probability of a straight = | Possible straights |
| Total Hands |
Reduce top and bottom by 2,040
GCF = Greatest Common Factor
P(Straight) = | 10,200 |
| 2,598,960 |
GCF for 5 and 1274 = 2040
Final Answer
Decimal probability = 0.0039246468
You have 2 free calculationss remaining
What is the Answer?
Decimal probability = 0.0039246468
How does the 5 Card Poker Hand Calculator work?
Free 5 Card Poker Hand Calculator - Calculates and details probabilities of the 10 different types of poker hands given 1 player and 1 deck of cards.
This calculator has 1 input.
What 1 formula is used for the 5 Card Poker Hand Calculator?
Total Possible 5 Card Hands = 2,598,960
For more math formulas, check out our
Formula Dossier
What 4 concepts are covered in the 5 Card Poker Hand Calculator?
- 5 card poker hand
- combination
- a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter
nPr = n!/r!(n - r)! - factorial
- The product of an integer and all the integers below it
- probability
- the likelihood of an event happening. This value is always between 0 and 1.
P(Event Happening) = Number of Ways the Even Can Happen / Total Number of Outcomes
Example calculations for the 5 Card Poker Hand Calculator
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