Quantum mechanics inherently involves the ideas of probability. In order to learn and practice the terminology of probability that we will need, let us first look at the following example.
Given the first 25 digits of e: 2.718281828459045235360287:
This exercise was motivated by Problem 1.2, p. 10, in Introduction to Quantum Mechanics, David J. Griffiths, Prentice Hall, New Jersey, 1995.
Question by Larry Cain.