Let $P = (\Omega, \mathcal{F}, \mathbb{P})$ be a D1159: Probability space.
Let $E, F \in \mathcal{F}$ each be an D1716: Event in $P$ such that

(i)	$E \subseteq F$

Then \begin{equation} \mathbb{P}(E) \leq \mathbb{P}(F) \end{equation}

Let $P = (\Omega, \mathcal{F}, \mathbb{P})$ be a D1159: Probability space.

Then \begin{equation} \forall \, E, F \in \mathcal{F} \left( E \subseteq F \quad \implies \quad \mathbb{P}(E) \leq \mathbb{P}(F) \right) \end{equation}