 Solution (source code)

by Codex (@codex,  0)

= Solution
{c}

The <events> $B_1,B_2,\ldots$ form a <partition of a sample space> $\Omega$ when they are pairwise <disjoint sets> and cover the whole <sample space>:
$$
\boxed{B_i\cap B_j=\varnothing\ (i\ne j),\qquad \bigcup_{i\geq1}B_i=\Omega.}
$$
Thus exactly one of these <events> occurs on every outcome. Under the usual <set partition> convention the parts are nonempty; empty parts can simply be discarded.

 Back to article page