Q2.2

$E_{1}$ and $E_{2}$ are events in a probability space satisfying the following constraints: Pr$$\left ( E_{1} \right ) = Pr$$\left ( E_{2} \right ) Pr$$\left ( E_{1}\cup E_{2} \right ) = $1$ $E_{1}$ and $E_{2}$ are independent The value of Pr$$\left ( E_{1} \right ), the probability of the event $E_{1}$, is