Final answer:
The subject of this question is Mathematics. The three events mentioned, permutation calculator, combination calculator, and binomial distribution calculator, are all related to probability calculations.
Step-by-step explanation:
The subject of this question is Mathematics. The three events mentioned, permutation calculator, combination calculator, and binomial distribution calculator, are all related to probability calculations in Mathematics.
A permutation calculator is used to determine the number of possible arrangements of a set of objects, where order matters. A combination calculator is used to determine the number of ways to select a subset from a larger set, where order doesn't matter. A binomial distribution calculator is used to calculate the probabilities of a discrete random variable with only two possible outcomes, such as success or failure, over a fixed number of trials.