Event/Examples/Tossing 2 Coins

Examples of Events
Let $\EE$ be the experiment of tossing $2$ coins.

From Tossing $2$ Coins, the sample space of $\EE$ is:
 * $\Omega = \set {\tuple {\mathrm H, \mathrm H}, \tuple {\mathrm H, \mathrm T}, \tuple {\mathrm T, \mathrm H}, \tuple {\mathrm T, \mathrm T} }$

where $\mathrm H$ denotes heads and $\mathrm T$ denotes tails.

Let $A$ be the subset of $\Omega$ defined as:
 * $A = \set {\tuple {\mathrm H, \mathrm H}, \tuple {\mathrm H, \mathrm T}, \tuple {\mathrm T, \mathrm H} }$

Let $B$ be the subset of $\Omega$ defined as:
 * $A = \set {\tuple {\mathrm H, \mathrm H} }$

Then:
 * $A$ is the event that there is at least one head


 * $B$ is the event that there are two heads.