the measure of likeliness that something will happen or result will follow.


  • The probability of a coin flip resulting in "heads." We are looking at the likeliness of 1 outcome ("heads"), but there are 2 possible outcomes ("heads" and "tails"), so the probability that the coin flip will result in "heads" is 1/2 or 50%.
  • The probability of a single dice roll resulting in 6. We are looking at the likeliness of 1 outcome (6) but there are 6 possible outcomes (1, 2, 3, 4, 5, and 6). So the probability of rolling the number 6 is 1/6 or 16.66%. 
  • The probability of drawing an Ace out of a standard 52-card deck. There are 4 Aces in a card deck, and there are 52 cards total in the deck. So the probability of drawing an Ace is 4/52 or 7.69%.

These are fairly simple examples, but you can imagine the complexity we could be getting into here. For example, what's the probability of rolling at least one 6 with 2 dice? What's the probability of rolling a Yahtzee in 3 rolls? 

Probability can get very complex, but it's also very fun! 

See Statistics 

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