Past exam of the year 1 of the computer science course of the University of Oxford / 2019 / Discrete mathematics, continuous mathematics, and probability resit / 9 / b / i / Solution

$\Omega$ is the sample space; its elements are elementary outcomes, also called sample points. An event is a measurable subset of $\Omega$, belonging to the sigma-algebra $\mathcal{F}$, rather than necessarily a single outcome.