Calculators
Factorial and Derangement Calculator
Combination Calculator Calculates how many ways you can choose "r" objects from a set of "n" objects.
Tutorials About Occupancy Probability
Occupancy Probability Problems are also known as Bernoulli Trials
Part 1 Solving Occupancy Probability Problems by the "Brute Force" Method: Part 1
Part 2 Solving Occupancy Probability Problems by the "Brute Force" Method: Part 2
Part 3 Solving Occupancy Probability Problems Mathematically
4 Sided Die Probability of all 4 numbers in 7 Rolls
6 sided die Probability of all 6 numbers in 13 Rolls
8 Sided Die Probability of all 8 numbers in 20 Rolls
12 Sided Die Probability of all 12 numbers in 35 Rolls
20 Sided Die Probability of all 20 numbers in 67 Rolls
38 Number Roulette Wheel Probability of spinning all 38 numbers in 152 spins
Rolling a six-sided die Probability of rolling at least 2 sixes in four throws.
Rolling a six-sided die Probability of rolling at least 2 sixes in four throws.(Solved by using binomial distribution formula).
Calculating Birthday Probability
Birthday Paradox How many people do you have to select to have a 50% chance that two have the same birthday?
Multiple Birthdays How many people are required to have a 50% chance that three or more have the same birthday?
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