How often will a die come up "4"? How likely is it to rain tomorrow? Probability is one of the most powerful frameworks for modeling the world around us.

If two fair coins are tossed simultaneously, what is the probability that exactly one head appears?

Approximately what proportion of the human population was born on February 29th?

Three integers are chosen at random without replacement from the first 20 positive integers.

What is the probability that their product is even?

Albert randomly guesses the number \(37.\) Bradley then picks a number that will maximize his chances of winning. What number did Bradley pick?

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