Answer
$P(E~and~F)=0$
Work Step by Step
If the events E and F are disjoint, they have no outcomes in common. That is, $N(E~and~F)=0$. So:
$P(E~and~F)=\frac{N(E~and~F)}{N(S)}=\frac{0}{N(S)}=0$
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